List of defunct baseball minor leagues


This is a sortable list of defunct baseball minor leagues.

List

LeagueStateDesignationYears
Alabama-Florida LeagueAlabama, FloridaClass D1936-1939, 1951-1962
Alabama-Mississippi LeagueAlabama, MississippiClass D1936
Alabama State LeagueAlabamaClass D1940–1941, 1956–1950
Alabama-Tennessee LeagueAlabama, TennesseeClass D1921
All-American AssociationAlabama, Louisiana, Tennessee, TexasIndependent2001
American AssociationColorado, Indiana, Iowa, Kansas, Kentucky, Louisiana, Minnesota, Missouri, Nebraska, New York, Ohio, Oklahoma, Texas, West Virginia, WisconsinClass A
Class AA
Class AAA 		1902-1962, 1969-1997
Anthracite LeaguePennsylvaniaClass D1928
Appalachian LeagueTennessee, North Carolina, Virginia, West VirginiaClass D
Rookie 		1911–1914, 1921–1925, 1937–1955, 1957–2020
Arizona Instructional LeagueArizonaWinter Rookie1960–1991
Arizona LeagueArizonaIndependent1897
Arizona-Mexico LeagueArizona, MexicoClass C1955-1958
Arizona-Mexico League IIArizona, MexicoIndependent2003
Arizona Rookie LeagueArizonaWinter Rookie1964
Arizona State LeagueArizonaClass D1928–1930
Arizona-Texas LeagueArizona, TexasClass D
Class C 		1931–1932, 1937–1941, 1947–1950, 1952-1954
Arkansas-Louisiana-Texas LeagueArkansas, Louisiana, TexasNegro minor1951
Arkansas-Missouri LeagueArkansas, MissouriClass D1936–1940
Arkansas State LeagueArkansas, Louisiana, Missouri, TexasClass D1893, 1897, 1908–1909, 1934–1935
Arkansas-Texas LeagueArkansas, TexasClass D1906
Atlantic AssociationConnecticut, Delaware, Massachusetts, Maine, Maryland, New Jersey, Pennsylvania, Rhode Island, Washington, D.C.Independent
Class D 		1889–1890, 1908
Atlantic Coast LeagueNorth Carolina, South CarolinaIndependent1995
Atlantic League IConnecticut, Delaware, New Jersey, New York, Pennsylvania, VirginiaClass A
Class B 		1895–1900, 1905, 1907-1909
Atlantic League IIConnecticut, New Jersey, New YorkClass D1914–1915
Basin LeagueNebraska, South DakotaIndependent1953–1959
Beaver Valley LeaguePennsylvaniaIndependent1894
Bi-State League IIllinois, WisconsinClass D1915
Bi-State League IINorth Carolina, VirginiaClass D1934–1942
Big South LeagueArkansas, Mississippi, TennesseeIndependent1996–1997
Big State LeagueTexasClass B1947–1957
Black Hills LeagueNebraska, South DakotaIndependent1891–1892
Blue Grass LeagueKentuckyClass D1892, 1896, 1908–1912, 1922–1924
Blue Mountain LeaguePennsylvaniaIndependent1907
Blue Ridge League IMaryland, Pennsylvania, West VirginiaClass D1915–1918, 1920–1930
Blue Ridge League IINorth Carolina, VirginiaClass D1946–1950
Border League IMichigan, OntarioClass D1912–1913
Border League IINew York, Ontario, QuebecClass C1946–1951
Buckeye LeagueOhioClass D1915
California Fall LeagueCaliforniaWinter Rookie1998
California League ICaliforniaClass B
Class D
Class E 		1879–1893, 1896–1897, 1900–1902, 1906–1909
California Players LeagueCaliforniaIndependent1894
California State LeagueCaliforniaClass D1883, 1885–1886, 1888, 1903–1906, 1910, 1912–1915, 1928–1929
California Winter League ICaliforniaWinter League1928–1947
Can–Am League IMassachusetts, New York, OntarioClass C1936–1942, 1946–1951
Can–Am League IIOntarioIndependent1959
Can–Am League IIINew Jersey, New York, Quebec, OntarioIndependent2005–2019
Canadian AssociationCanadaIndependent1895
Canadian Baseball LeagueCanadaIndependent2003
Canadian LeagueOntario, PennsylvaniaIndependent
Class D 		1885–1886, 1893–1894, 1896–1898
Canadian Midland LeagueCanadaIndependent1894
Canal Zone LeaguePanamaWinter Rookie1948–1950
Cape Breton Colliery LeagueNova ScotiaClass D
Class C 		1937–1939
Carolina AssociationNorth Carolina, South CarolinaClass D1908–1912
Carolina Baseball LeagueNorth CarolinaIndependent1936–1938
Carolina Interstate LeagueNorth Carolina, South CarolinaIndependent1904
Carolina Textile LeagueNorth CarolinaIndependent1935
Central Association IIllinois, Iowa, Missouri, WisconsinClass D1908–1917
Central Association IIIllinois, Iowa, MissouriClass C1947–1949
Central Atlantic LeagueIndependent1888
Central Baseball LeagueLouisiana, Missouri, TexasIndependent2002–2005
Central California LeagueCaliforniaClass D1896, 1910–1911
Central Connecticut LeagueConnecticutIndependent1892, 1910–1911
Central International LeagueManitoba, Minnesota, North Dakota, WisconsinClass C1912
Central Interstate LeagueIllinois, Indiana, IowaIndependent1887–1890
Central Kansas LeagueKansasClass D1908–1912
Central League INew Jersey, New York, PennsylvaniaIndependent1888
Central League IIIllinois, Indiana, Kentucky, PennsylvaniaClass C1897
Central League IIIIllinois, Indiana, Michigan, Ohio, Pennsylvania, West VirginiaClass B1900, 1903–1917, 1920–1922, 1926, 1928–1930, 1932, 1934
Central League IVIndiana, Michigan, Ohio, West VirginiaClass A1948–1951
Central Mexican LeagueMexicoClass C1955–1957
Central Nebraska LeagueNebraskaIndependent1903
Central New Jersey LeagueNew JerseyIndependent1891–1892
Central New York LeagueNew YorkIndependent1888, 1910
Central Pennsylvania LeaguePennsylvaniaIndependent
Class F 		1886–1888, 1896–1898
Central Texas LeagueTexasClass D1914–1917
Chicago City LeagueIllinoisIndependent1887, 1890, 1892–1894, 1909–1910
Citrus LeagueFloridaSpring1972
Coastal Plain LeagueNorth CarolinaClass D1937–1941, 1946–1952
Cocoa Rookie LeagueFloridaRookie1964
Colonial League IConnecticut, Massachusetts, Rhode IslandClass C1914–1915
Colonial League IIConnecticut, New Jersey, New YorkClass B1947–1950
Colorado State LeagueColoradoIndependent1885, 1889–1891, 1894–1896, 1898
Connecticut AssociationConnecticutClass D1910
Connecticut League/Connecticut State LeagueConnecticutClass E
Class B
Class F 		1884–1885, 1888, 1891, 1894–1895, 1897–1912
Continental Baseball LeagueLouisiana, New Mexico, TexasIndependent2007–2010
Copper Country Soo LeagueMichiganClass D1904–1905
Cotton States League IAlabama, Arkansas, Florida, Louisiana, MississippiClass D1902–1914
Cotton States League IIArkansas, Louisiana, Mississippi, TexasClass D1919–1932
Cotton States League IIIArkansas, Louisiana, Mississippi, TexasClass C1936–1941, 1947–1955
Cumberland Valley LeagueMaryland, PennsylvaniaIndependent1896
Dakota LeagueNorth Dakota, South DakotaClass D1921–1922
Dawson LeagueYukonIndependent1904
Delaware State LeagueDelawareIndependent1889
Delta LeagueMississippiClass D1904–1905
Dixie AssociationAlabama, Arkansas, Florida, Georgia, Louisiana, New Mexico, North Carolina, Tennessee, TexasClass AA1971
Dixie League IAlabama, GeorgiaClass D1916–1917
Dixie League IIArkansas, Louisiana, Mississippi, TexasClass C1933
East Dixie LeagueArkansas, Louisiana, MississippiClass C1934–1935
East Texas LeagueTexasClass D
Class C 		1916, 1923–1926, 1931, 1936–1940, 1946, 1949–1950
East Texas Negro LeagueLouisiana, TexasNegro minor1946
Eastern AssociationConnecticut, Massachusetts, New York, Pennsylvania, Rhode IslandIndependent
Class B 		1882, 1901, 1909, 1913–1914
Eastern Canada LeagueOntario, QuebecClass B1922–1923
Eastern Carolina Baseball AssociationNorth CarolinaIndependent1920–1922
Eastern Carolina LeagueNorth CarolinaClass D1908–1910, 1928–1929
Eastern Championship AssociationNew York, Pennsylvania, Washington D.C.Independent1881
Eastern Illinois LeagueIllinois, IndianaClass D1907–1908
Eastern Interstate LeagueIllinois, PennsylvaniaIndependent1888, 1890, 1895
Eastern Iowa LeagueIllinois, IowaIndependent1905
Eastern Kansas LeagueKansasClass D1910–1911
Eastern League IDelaware, Maryland, New Jersey, Pennsylvania, VirginiaIndependent1884–1887
Eastern League IIConnecticut, Maine, Massachusetts, New York, Pennsylvania, Rhode Island, VirginiaClass B
Class A 		1916–1919, 1932
Eastern New England LeagueMaine, MassachusettsIndependent1885
Eastern Shore LeagueDelaware, Maryland, VirginiaClass D1922–1928, 1937–1941, 1946–1949
Empire State LeagueGeorgia, New YorkIndependent
Class D 		1887, 1913
Empire State League (1987)New YorkIndependent1987
Empire State League (1905–1907)New YorkIndependent 1905–19071905–1907
Evangeline Baseball LeagueLouisiana, Mississippi, TexasClass D
Class C 		1934-1942, 1946–1957
Far West LeagueCalifornia, Oregon, NevadaClass D1948–1951
Federal LeagueIllinois, Indiana, Kentucky, Missouri, Ohio, PennsylvaniaIndependent1913
Florida-Alabama-Georgia LeagueAlabama, Florida, GeorgiaClass D1915
Florida East Coast Instructional LeagueFloridaWinter Rookie1964
Florida East Coast LeagueFloridaClass D
Rookie 		1940–1942,1972
Florida Instructional LeagueFloridaWinter Rookie1958–2007
Florida Instructional League NorthFloridaWinter Rookie1969
Florida Instructional League SouthFloridaWinter Rookie1969
Florida International LeagueCuba, FloridaClass C
Class B 		1946–1954
Florida Winter LeagueFloridaWinter1960–1961
Geauga County LeagueOhioIndependent1905
Georgia State LeagueGeorgiaClass D1906, 1914, 1920–1921, 1948–1956
Georgia-Alabama LeagueAlabama, GeorgiaClass D1913–1917, 1928–1930, 1946–1951
Georgia-Florida LeagueFlorida, Georgia,Class D
Class A 		1935–1942, 1946–1958, 1962–1963
Great Central LeagueIllinois, Indiana, Iowa, MinnesotaIndependent1994
Gulf LeagueAlabama, LouisianaIndependent1886
Gulf States LeagueLouisiana, TexasClass A1976
Hawaii Winter BaseballHawaiiWinter Independent1993–2008
Hudson River LeagueMassachusetts, New YorkClass D
Class C 		1903–1907
Illinois-Indiana LeagueIllinois, IndianaIndependent1889, 1892
Illinois-Indiana-Iowa League Illinois, Indiana, Iowa, Minnesota, WisconsinClass D
Class B 		1901–1917, 1919–1932, 1935, 1937–1942, 1946–1961
Illinois-Iowa LeagueIndiana, Illinois, IowaIndependent1890–1892
Illinois State LeagueIllinoisClass D1947–1948
Illinois-Missouri LeagueIllinois, MissouriClass D1908–1914
Independent Negro LeagueGeorgia, Louisiana, Maryland, Missouri, Tennessee, New Jersey, New York, Ohio, Pennsylvania, Texas, Washington D.C.Independent1914–1950
Independent Northern LeagueNew York, OntarioIndependent1906
Indiana-Michigan LeagueIndiana, MichiganClass D1921
Indiana-Ohio LeagueIndiana, OhioClass D1908
Indiana State LeagueIndianaIndependent1889, 1890, 1900
Inland Empire LeagueOregon, WashingtonClass D1902, 1908
Inter-American LeagueFlorida, Dominican Republic, Panama, Puerto Rico, VenezuelaClass AAA1979
International Association for Professional Base Ball PlayersOhio, Ontario, New Hampshire, New York, Massachusetts, Michigan, New JerseyIndependent1877–1880, 1888–1900
International League of Independent Professional Base Ball ClubsCuba, Delaware, New Jersey, PennsylvaniaIndependent1906
Interstate AssociationIndiana, Michigan, OhioClass C1906
Interstate LeagueIndiana, Kentucky, Michigan, Ohio, Pennsylvania, New Jersey, New York, West VirginiaIndependent
Class C
Class D 		1896–1901, 1905–1908, 1913–1916, 1932
Iowa State LeagueIllinois, IowaClass D1904–1907, 1912
Iowa-South Dakota LeagueIowa, South DakotaClass D1902–1903
Iron & Oil AssociationOhio, PennsylvaniaIndependent1884
Iron & Oil LeagueNew York, Ohio, Pennsylvania, West VirginiaIndependent
Class F
Class C 		1885, 1892, 1895, 1898
Kansas State LeagueKansas, OklahomaIndependent
Class D 		1887, 1895–1898, 1905–1906, 1909–1911, 1913–1914
Kansas-Oklahoma-Missouri League Kansas, Missouri, OklahomaClass D1946–1952
Kentucky–Indiana LeagueIndiana, KentuckyIndependent1896
Kentucky-Illinois-Tennessee League Illinois, Indiana, Kentucky, TennesseeClass D1903–1906, 1910–1914, 1916, 1922–1924, 1933–1942, 1946–1955
Keystone AssociationPennsylvaniaIndependent1884–1885
League AllianceEastern United StatesSemi-affiliated1877, 1882
Lone Star LeagueTexasClass D
Class C
Class A 		1927–1929, 1947–1949, 1977
Longhorn LeagueTexasClass C1947–1955
Louisiana State Baseball LeagueLouisianaIndependent
Class D 		1915, 1920
Maine State LeagueMaine, New HampshireIndependent
Class D 		1887, 1907–1908
Manitoba-Dakota League Manitoba, North DakotaIndependent1950–1957
Maryland Fall BaseballMarylandFall1998
Massachusetts-Connecticut LeagueConnecticut, MassachusettsClass D1912
Michigan State LeagueMichiganIndependent
Class D
Class C 		1889–1890, 1895, 1902, 1911–1914, 1926, 1940–1941
Michigan-Ontario LeagueMichigan, OntarioClass B1919–1926
Middle Atlantic LeagueMaryland, Ohio, New York, Pennsylvania, West VirginiaClass C1925–1942, 1946–1951
Middle States LeagueConnecticut, Delaware, New Jersey, PennsylvaniaIndependent1889
Middle Texas LeagueTexasClass D1914–1915
Midwest LeagueIllinois, Indiana, Iowa, Kentucky, Michigan, Ohio, WisconsinClass D
Class A 		1956–2020
Minnesota-Wisconsin LeagueMinnesota, WisconsinClass C
Class D 		1909–1912
Mississippi State LeagueMississippiClass D1924
Mississippi Valley LeagueIllinois, IowaClass D
Class B 		1922–1933
Mississippi-Ohio Valley LeagueIllinois, Indiana, Iowa, Kentucky, MissouriClass D1949–1955
Missouri-Iowa-Nebraska-Kansas League Iowa, Kansas, Missouri, NebraskaClass D1910–1913
Missouri State LeagueMissouriIndependent
Class D 		1896, 1911
Missouri Valley LeagueArkansas, Kansas, Missouri, OklahomaIndependent
Class D
Class C 		1901–1905
Monongahela LeaguePennsylvaniaIndependent1894
Montana State LeagueIdaho, Montana, UtahIndependent1892, 1900, 1909
Mountain State LeagueKentucky, West VirginiaClass D
Class C 		1936–1942
Mountain States League IKentucky, Ohio, West VirginiaClass D1911–1912
Mountain States League IIKentucky, Tennessee, VirginiaClass D
Class C 		1948–1954
Naugatuck Valley LeagueConnecticutIndependent1896
National AssociationMassachusetts, New Hampshire, New York, Pennsylvania, Washington D.C.Independent1879–1880
National Association of Colored Baseball Clubs of the United States and CubaCuba, New York, PennsylvaniaNegro minor1907–1910
National Colored Base Ball LeagueKentucky, Maryland, Massachusetts, New York, Ohio, Pennsylvania, Washington D.C.Negro minor1887
Nebraska State LeagueIowa, Kansas, Nebraska, South DakotaClass B
Class D 		1892, 1910–1915, 1922–1923, 1928–1938, 1956–1959
Negro American AssociationGeorgia, Maryland, North Carolina, Pennsylvania, South Carolina, VirginiaNegro minor1939, 1948–1949
Negro National Baseball AssociationNorth Carolina, VirginiaNegro minor1954
Negro Southeastern LeagueAlabama, GeorgiaNegro minor1921
Negro Southern League IAlabama, Arkansas, Florida, Georgia, Kentucky, Louisiana, Ohio, TennesseeNegro minor1920–1931, 1933–1936
Negro Southern League IIAlabama, Arkansas, Florida, Georgia, Indiana, North Carolina, TennesseeNegro minor1945–1951
Negro Texas LeagueAlabama, Arkansas, Louisiana, TexasNegro minor1949
Nevada State LeagueNevadaIndependent1907
New Brunswick-Maine LeagueMaine, New BrunswickClass D1913
New California LeagueCaliforniaIndependent1881
New England AssociationMassachusetts, New Hampshire, Rhode IslandIndependent1877, 1895
New England LeagueConnecticut, Massachusetts, Maine, New Hampshire, Rhode IslandIndependent
Class F
Class B 		1877, 1886–1888, 1891–1899, 1901–1915, 1919, 1926–1930, 1933, 1946–1949
New Hampshire State LeagueNew Hampshire, New York, VermontIndependent
Class D 		1885–1886, 1895, 1907
New Jersey State LeagueNew JerseyClass D1897
New Pacific LeagueBritish Columbia, Oregon, WashingtonClass C1896
New York-New Jersey LeagueConnecticut, New Jersey, New YorkClass D1913
New York–Pennsylvania LeagueNew York, PennsylvaniaClass D
Class A 		1923–1937
New York-Penn LeagueConnecticut, Maryland, Massachusetts, New York, Ohio, Ontario, Pennsylvania, Vermont, West VirginiaClass A1939–2020
New York State LeagueNew York, PennsylvaniaIndependent
Class B
Class D 		1885, 1894–1895, 1897–1917
North Atlantic LeagueMassachusetts, New Hampshire, New Jersey, New York, Ontario, PennsylvaniaClass D
Independent 		1946–1950, 1995–1996
North Carolina State LeagueNorth CarolinaClass D1913–1917, 1937–1953
North Dakota LeagueNorth DakotaClass D1923
North Texas LeagueArkansas, TexasClass D1905, 1907
Northeast Arkansas LeagueArkansasClass D1909–1911, 1936–1941
Northeast LeagueMaine, Massachusetts, New Jersey, Pennsylvania, Rhode IslandIndependent1995–1998, 2003–2004
Northeastern LeagueConnecticut, Massachusetts, New Hampshire, New York, VermontIndependent
Class B 		1887, 1895–1896, 1934
Northern-Copper Country LeagueManitoba, Michigan, Minnesota, North DakotaClass C
Class D 		1906–1907
Northern Copper Country-Soo LeagueManitoba, Michigan, Minnesota, North DakotaClass D1905
Northern LeagueManitoba, Michigan, Minnesota, North Dakota, Ontario, South Dakota, WisconsinClass D
Class A 		1902–1905, 1908, 1913–1917, 1932–1942, 1932–1942, 1946–1971
Northern Maine LeagueMaineClass D1909
Northern Michigan LeagueMichiganIndependent1887, 1895
New York LeagueNew York, VermontClass D
Independent 		1900–1905
Northern State of Indiana LeagueIndianaClass D1909–1911
Northern Utah LeagueIdaho, UtahClass D1921
Northwest International LeagueBritish Columbia, WashingtonClass B1919
Northwestern League IIllinois, Indiana, Iowa, Michigan, Minnesota, Ohio, WisconsinIndependent1883–1884, 1886–1887
Northwestern League IIBritish Columbia, Montana, Oregon, WashingtonClass B1905–1917
Oahu LeagueHawaii,Independent1913
Ohio State LeagueIndiana, Kentucky, Michigan, Ohio, West VirginiaIndependent
Class D 		1887, 1908–1916, 1936–1947
Ohio-Indiana LeagueIndiana, OhioClass D1948–1951
Ohio-Pennsylvania LeagueOhio, Pennsylvania, West VirginiaClass C
Class D 		1905–1912
Ohio Valley LeagueOhio,Independent1890, 1912, 1949
Oklahoma State LeagueOklahomaClass D1912, 1922–1924
Oklahoma-Arkansas-Kansas LeagueArkansas, Kansas, OklahomaClass D1907
Oklahoma-Kansas LeagueKansas, OklahomaClass D1908
Ontario-Quebec-Vermont LeagueOntario, Quebec, VermontClass B1924
Oregon State LeagueOregon, Washington (state)Class D1904
Pacific Coast International LeagueBritish Columbia, WashingtonClass B1918–1922
Pacific Interstate LeagueOregon, WashingtonIndependent1891
Pacific LeagueCaliforniaIndependent1878-1880
Pacific National LeagueCalifornia, Idaho, Montana, Oregon, Utah, WashingtonClass A
Class B
Independent 		1903–1905
Pacific Northwest LeagueBritish Columbia, Montana, Oregon, Utah, WashingtonIndependent
Class B 		1890–1892, 1896, 1898, 1901–1902
Palmetto LeagueGeorgia, South CarolinaClass D1931
Pan American AssociationUnknownIndependent1960
Panhandle-Pecos Valley LeagueNew Mexico, TexasClass D1923
Peninsula Winter LeagueCaliforniaRookie1959–1968
Pennsylvania LeaguePennsylvaniaIndependent1903–1904
Pennsylvania-Ohio-Maryland League Maryland, Ohio, Pennsylvania, West VirginiaClass D1908–1914
Pennsylvania-Ontario-New York League Ontario, Pennsylvania, New YorkClass D1939–1956
Pennsylvania-New Jersey LeagueNew Jersey, PennsylvaniaIndependent1908
Pennsylvania State AssociationPennsylvaniaClass D1934–1942
Pennsylvania State LeaguePennsylvaniaIndependent1892–1895
Pennsylvania-West Virginia LeaguePennsylvania, West VirginiaClass D1906–1907
Pennyrile LeagueKentuckyIndependent1896
Piedmont LeagueMaryland, North Carolina, Pennsylvania, South Carolina, VirginiaClass D
Class C
Class B 		1921–1955
Potomac LeagueMaryland, West VirginiaClass D1916
Prairie LeagueManitoba, Minnesota, North Dakota, Saskatchewan, South Dakota, WisconsinIndependent1995–1997
Provincial LeagueQuebec, VermontIndependent
Class C 		1900, 1948–1955
Rio Grande AssociationArizona, New Mexico, TexasClass D1915
Rio Grande Valley LeagueTexasClass D
Class C 		1931, 1949–1950
Rocky Mountain LeagueColorado, New Mexico, WyomingClass D1912
San Francisco City LeagueCaliforniaIndependent1896
San Joaquin Valley LeagueCaliforniaClass D
Independent 		1910–1911
Sarasota Rookie LeagueFloridaRookie1964
Sooner State LeagueOklahoma, TexasClass D1947–1957
Sophomore LeagueNew Mexico, TexasClass D1958–1961
South Carolina LeagueSouth CarolinaClass D1906–1908
South Central LeagueArkansas, OklahomaClass D1906, 1912
South Coast LeagueGeorgia, Florida, South CarolinaIndependent2007
South Dakota LeagueMinnesota, North Dakota, South DakotaClass D1920–1923
South New Jersey LeagueNew JerseyIndependent
Class D 		1895–1897
South Texas LeagueTexasClass C1903–1906
Southeastern LeagueAlabama, Florida, Georgia, Louisiana, North Carolina, TennesseeClass D
Class B
Independent 		1910–1912, 1926–1950, 2002–2003
Southern AssociationAlabama, Arkansas, Georgia, Louisiana, TennesseeClass B
Class C
Class A
Class AA 		1886, 1892–1896, 1898–1899, 1901–1961
Southern California LeagueCaliforniaClass D1913
Southern California Trolley LeagueCaliforniaClass D1910
Southern California Winter LeagueCaliforniaWinter1914, 1957
Southern Illinois LeagueIllinoisIndependent
Class D 		1895–1896, 1910
Southern League of Colored Base BallistsAlabama, Florida, Georgia, Louisiana, South Carolina, TennesseeNegro minor1886
Southern Michigan LeagueMichiganClass D
Class C 		1906–1912
Southern New Hampshire LeagueNew HampshireClass D1907
Southern Tier LeagueNew York, PennsylvaniaIndependent1904–1905
Southern Tri-State LeagueAlabama, TennesseeIndependent1905
Southwest International LeagueArizona, California, Mexico, Nevada, TexasClass C1948–1951
Southwest Iowa LeagueIowaClass D1903
Southwest Texas LeagueTexasClass D
Independent 		1910–1911, 1936
Southwest Washington LeagueWashingtonClass D1903–1906
Southwestern LeagueArkansas, Kansas, Missouri, OklahomaIndependent
Class D
Class C 		1887, 1904, 1921–1926
Southwestern Nebraska Baseball LeagueNebraskaIndependent1903
Sunset LeagueArizona, California, Mexico, NevadaClass C1947–1950
Tar Heel LeagueNorth CarolinaClass D1939–1940, 1953–1954
Tennessee-Alabama LeagueAlabama, TennesseeIndependent1903–1904
Texas AssociationTexasClass C 1896, 1923–1926
Texas Colored LeagueLouisiana, Oklahoma, TexasNegro minor1919–1921, 1923–1926
Texas-Louisiana Negro LeagueLouisiana, TexasNegro minor1930–1931
Texas–Oklahoma–Louisiana LeagueLouisiana, Oklahoma, TexasNegro minor1929
Texas-Oklahoma LeagueOklahoma, TexasClass D1911–1914, 1921–1922
Texas-Southern LeagueLouisiana, TexasClass B
Class C 		1895–1899
Texas Valley LeagueTexasIndependent
Class D 		1901–1908, 1927–1928, 1938
Tidewater LeagueNorth Carolina, VirginiaClass D1911
Tobacco State LeagueNorth CarolinaClass D1946–1950
Tri State LeagueAlabama, Florida, Louisiana, MississippiNegro minor1935
Tri-State LeagueArkansas, Delaware, Illinois, Indiana, Iowa, Kentucky, Mississippi, Nebraska, New Jersey, North Carolina, Ohio, Pennsylvania, South Carolina, South Dakota, Tennessee, West Virginia, WisconsinIndependent
Class B
Class D 		1887–1890, 1895, 1904–1914, 1924–1926, 1938–1939, 1946–1955
Twin Ports LeagueMinnesota, WisconsinClass E1943
Twin States LeagueNew Hampshire, VermontClass D1911
Union AssociationIdaho, Montana, UtahClass D1911–1914
Union Professional LeagueDelaware, Maryland, New Jersey, New York, Pennsylvania, Washington D.C.Independent1908
United States Baseball LeagueIllinois, New York, Ohio, Pennsylvania, Virginia, Washington D.C.Independent1900, 1912–1913
United States LeagueIllinois, Massachusetts, Michigan, Missouri, New Jersey, New York, Ohio, PennsylvaniaNegro minor1945–1946
Upper Peninsula LeagueMichigan, WisconsinIndependent1888, 1890–1891, 1895
Utah-Idaho LeagueIdaho, UtahClass C1926–1928
Utah State LeagueUtahIndependent1902
Vermont State LeagueNew York, VermontIndependent1907
Virginia LeagueNorth Carolina, VirginiaClass C
Class B 		1906–1928
Virginia League IVirginiaIndependent
Class B 		1894–1896
Virginia League IIVirginiaClass D1900
Virginia League IIIVirginiaClass D1939–1942
Virginia League IVNorth Carolina, VirginiaClass D1948–1951
Virginia Mountain LeagueVirginiaIndependent 1912, 1914
Virginia-North Carolina LeagueNorth Carolina, VirginiaClass C
Class D 		1901, 1905
Virginia Valley LeagueKentucky, Oregon, West VirginiaClass D1910
Washington State LeagueWashingtonClass D1910–1912
West Coast Negro Baseball AssociationCalifornia, Oregon, WashingtonNegro minor1946
West Dixie LeagueLouisiana, TexasClass C1934–1935
West Michigan LeagueMichiganClass D1915
West Texas LeagueTexasClass D1920–1922, 1928–1929
West Texas-New Mexico LeagueNew Mexico, TexasClass D
Class C
Class B 		1937–1942, 1946–1955
West Virginia LeagueWest VirginiaClass D1910
Western Arkansas LeagueArkansasClass D 1924
Western AssociationArkansas, Colorado, Illinois, Indiana, Iowa, Kansas, Kentucky, Ohio, Oklahoma, Michigan, Minnesota, Missouri, Nebraska, Texas, West VirginiaIndependent
Class D
Class C 		1888–1891, 1893, 1894–1899, 1901, 1905–1911, 1914–1917, 1920–1932, 1934–1954
Western Baseball LeagueArizona, California, Oregon, Nevada, UtahIndependent1994–2002
Western Canada LeagueAlberta, Manitoba, SaskatchewanClass D
Class C
Class B
Independent 		1907, 1910–1914, 1919–1921, 1951–1961
Western Carolina LeagueNorth CarolinaClass D1948–1952, 1960–1962
Western Carolinas LeagueNorth Carolina, South CarolinaClass D
Class A 		1948–1952, 1960–1979
Western International LeagueIdaho, Oregon, Washington, Alberta, British ColumbiaClass B
Class A 		1922, 1937–1942, 1946–1954
Western Interstate LeagueIndiana, Illinois, PennsylvaniaIndependent
Class B 		1883, 1895
Western League IColorado, Indiana, Iowa, Kansas, Minnesota, Nebraska, Michigan, Ohio, New York, WisconsinIndependent1885–1888, 1892–1899
Western League IIColorado, Iowa, Illinois, Kansas, Minnesota, Missouri, Nebraska, New Mexico, Oklahoma, Texas, WisconsinClass A1900–1937, 1947–1958
Western League IIIColorado, Iowa, Minnesota, Nebraska, South Dakota, WyomingClass D1939–1941
Western New York LeagueNew YorkIndependent1890
Western Ontario Baseball AssociationOntarioClass D1905
Western Pennsylvania LeagueMaryland, Pennsylvania, West VirginiaClass D1907
Western Tri-State LeagueIdaho, Oregon, Washington (state)Class D1912–1914
Wisconsin-Illinois LeagueIllinois, WisconsinClass D1908–1914, 1926-1927, 1932
Wisconsin-Michigan LeagueMichigan, WisconsinIndependent1892
Wisconsin State LeagueIllinois, WisconsinClass D1905–1907, 1922-1925, 1928-1931, 1940-1942, 1946-1953