| Name | Mark | System | From | To | Successor | Notes |
| Arizona and California Railway | | ATSF | 1903 | 1911 | California, Arizona and Santa Fe Railway | - |
| Arizona and Colorado Railroad | | SP | 1902 | 1910 | Arizona Eastern Railroad | - |
| Arizona Eastern Railroad | AE | | 1904 | 1955 | Southern Pacific Company | - |
| Arizona Extension Railroad | | | 1917 | | N/A | - |
| Arizona Mineral Belt Railroad | | | 1883 | 1888 | Central Arizona Railway | - |
| Arizona Narrow Gauge Railroad | | | 1882 | 1887 | Tucson, Globe and Northern Railroad | - |
| Arizona and New Mexico Railway | | SP | 1883 | 1935 | El Paso and Southwestern Railroad | - |
| Arizona and South Eastern Railroad | | SP | 1888 | 1902 | El Paso and Southwestern Railroad | - |
| Arizona Southern Railroad | AZS | | 1904 | 1933 | N/A | - |
| Arizona and Swansea Railroad | | | 1909 | 1931 | N/A | - |
| Atchison, Topeka and Santa Fe Railway | ATSF | ATSF | 1902 | 1996 | Burlington Northern and Santa Fe Railway | - |
| Atlantic and Pacific Railroad | | ATSF | 1866 | 1897 | Santa Fe Pacific Railroad | - |
| Arizona and Utah Railway | | ATSF | 1899 | 1905 | Western Arizona Railway | - |
| Black Mesa and Lake Powell Railroad | BLKM | | 1973 | 2019 | N/A | - |
| Bradshaw Mountain Railroad | | ATSF | 1901 | 1912 | California, Arizona and Santa Fe Railway | - |
| California, Arizona and Santa Fe Railway | | ATSF | 1911 | 1963 | Atchison, Topeka and Santa Fe Railway | - |
| Central Arizona Railway | | | 1889 | 1937 | N/A | - |
| Clifton and Southern Pacific Railway | | SP | 1883 | 1883 | Arizona and New Mexico Railway | - |
| Dragoon Mountain and Northern Railroad | | SP | 1906 | 1907 | Johnson, Dragoon Mountain and Northern Railway | - |
| El Paso and Southwestern Company | | SP | 1908 | 1912 | N/A | Leased the El Paso and Southwestern Railroad |
| El Paso and Southwestern Railroad | | SP | 1901 | 1955 | Southern Pacific Company | - |
| Gila Valley, Globe and Northern Railway | | SP | 1894 | 1910 | Arizona Eastern Railroad | - |
| Grand Canyon Railway | | ATSF | 1901 | 1942 | Atchison, Topeka and Santa Fe Railway | - |
| Johnson, Dragoon Mountain and Northern Railway | | SP | 1907 | 1908 | Johnson–Dragoon and Northern Railway | - |
| Johnson–Dragoon and Northern Railway | | SP | 1908 | 1911 | Southern Pacific Company | - |
| Magma Arizona Railroad | MAA | | 1914 | 1997 | N/A | - |
| Maricopa and Phoenix Railroad | | SP | 1907 | 1910 | Arizona Eastern Railroad | - |
| Maricopa and Phoenix Railroad | | SP | 1885 | 1895 | Maricopa and Phoenix and Salt River Valley Railroad | - |
| Maricopa and Phoenix and Salt River Valley Railroad | | SP | 1895 | 1907 | Maricopa and Phoenix Railroad | - |
| Mascot and Western Railroad | MASW | | 1914 | 1932 | N/A | - |
| Mexico and Colorado Railroad | | SP | 1908 | 1910 | El Paso and Southwestern Railroad | - |
| Mohave and Milltown Railway | | | 1903 | 1904 | N/A | - |
| Morenci Southern Railway | | SP | 1899 | 1922 | Morenci Industrial Railway | - |
| New Mexico and Arizona Railroad | | SP | 1882 | 1934 | Southern Pacific Railroad | - |
| Phoenix and Buckeye Railway | | SP | 1909 | 1910 | Arizona Eastern Railroad | - |
| Phoenix and Eastern Railroad | | SP | 1901 | 1934 | Southern Pacific Company | - |
| Phoenix, Tempe and Mesa Railway | | SP | 1894 | 1895 | Maricopa and Phoenix and Salt River Valley Railroad | - |
| Prescott and Arizona Central Railway | | | 1885 | 1893 | N/A | - |
| Prescott and Eastern Railroad | | ATSF | 1897 | 1911 | California, Arizona and Santa Fe Railway | - |
| Ray and Gila Valley Railroad | R&GV | | 1910 | 1943 | Copper Basin Railway | - |
| Saginaw Southern Railroad | | | 1898 | 1903 | N/A | - |
| San Manuel Arizona Railroad | SMA | | 1953 | 2003 | N/A | - |
| San Pedro and Southwestern Railway | SWKR | | 1992 | 2003 | San Pedro and Southwestern Railroad | - |
| Santa Fe and Grand Canyon Railroad | | ATSF | 1897 | 1901 | Grand Canyon Railway | - |
| Santa Fe Pacific Railroad | | ATSF | 1897 | 1902 | Atchison, Topeka and Santa Fe Railway | - |
| Santa Fe, Prescott and Phoenix Railway | | ATSF | 1891 | 1911 | California, Arizona and Santa Fe Railway | - |
| Shannon–Arizona Railway | | | 1909 | 1919 | Morenci Industrial Railway | - |
| Southern Pacific Railroad | | SP | 1878 | 1955 | Southern Pacific Company | - |
| Southern Pacific Company | SP | SP | 1885 | 1969 | Southern Pacific Transportation Company | - |
| Southern Pacific Transportation Company | SP | SP | 1969 | 1998 | Union Pacific Railroad | - |
| Southwestern Railroad of Arizona | | SP | 1900 | 1901 | El Paso and Southwestern Railroad | - |
| Tucson, Cornelia and Gila Bend Railroad | TC&G, TCG | | 1915 | 1985 | N/A | - |
| Tucson, Globe and Northern Railroad | | | 1887 | | N/A | Never opened |
| Tucson and Nogales Railroad | | SP | 1909 | 1934 | Southern Pacific Railroad | - |
| Twin Buttes Railroad | | | 1904 | 1929 | N/A | - |
| United Verde & Pacific Railway | | | 1894 | 1920 | N/A | - |
| Verde Tunnel and Smelter Railroad | | | 1912 | 1953 | N/A | - |
| Verde Valley Railway | | ATSF | 1911 | 1942 | Atchison, Topeka and Santa Fe Railway | - |
| Western Arizona Railway | | ATSF | 1906 | 1931 | N/A | - |
| Yuma Valley Railroad | | SP | 1914 | | | - |