Compendium of postage stamp issuers (Sm–So)

Each "article" in this category is a collection of entries about several stamp issuers, presented in alphabetical order. The entries are formulated on the micro model and so provide summary information about all known issuers.
See the :Category:Compendium of postage stamp issuers page for details of the project.

Smirne (Italian Post Office)

;Dates : 1909–1911
;Currency : 40 paras = 1 piastre
;Refer : Italian Post Offices in the Turkish Empire

Smyrne (Russian Post Office)

;Dates : 1909–1910
;Currency : 40 paras = 1 piastre
;Refer : Russian Post Offices in the Turkish Empire

SO 1920

;Refer : East Silesia

Solomon Islands

;Dates : 1975–
;Capital : Honiara
;Currency : 100 cents = 1 dollar
;Main Article Postage stamps and postal history of the Solomon Islands
;Includes : British Solomon Islands

Somalia

Under UN control with Italian administration 1950–60. Became an independent republic in 1960 and was
enlarged by addition of Somaliland Protectorate.
;Dates : 1950–
;Capital : Mogadishu
;Currency : 100 centesimi = 1 somalo
;Main Article Postage stamps and postal history of Somalia

Somalia (British Administration)

;Dates : 1950 only
;Currency : 100 cents = 1 shilling
;Refer : BA/BMA Issues

Somalia (British Military Administration)

BMA Somalia.
;Dates : 1948– 1950
;Currency : 100 cents = 1 shilling
;Refer : BA/BMA Issues

Somalia (British Occupation)

;Refer : East Africa Forces
;See also : Somalia (British Administration);

Somaliland Protectorate

;Dates : 1904–1960
;Capital : Hargeisa
;Currency : 16 annas = 1 rupee
;Main Article Postage stamps and postal history of British Somaliland
;Includes : British Somaliland

Soruth (Saurashtra)

Stamps of Soruth were at first issued in Junagadh only but later were extended to include the
Saurashtra Union of Jasdan, Morvi, Nawanagar, Soruth and Wadhwan. Stamps of the 1929–1949 period were
overprinted SARKARI.
;Dates : 1864–1949
;Capital : Junagadh
;Currency : 12 pies = 1 anna; 16 annas = 1 rupee
;Refer : Indian Native States

Soudan

;Refer : Sudan

South Africa

;Dates : 1910–
;Capital : Pretoria
;Currency : 12 pence = 1 shilling; 20 shillings = 1 pound
;Main Article Postage stamps and postal history of South Africa

South African Republic

;Dates : 1869–1902
;Capital : Pretoria
;Currency : 12 pence = 1 shilling; 20 shillings = 1 pound
;Refer : Transvaal

South African Territories

;Main Article Needed :
;Includes : Bophutatswana;

South Arabian Federation

;Dates : 1963–1968
;Capital : Aden
;Currency : 100 cents = 1 shilling
;Refer : Aden Protectorate States

South Australia

;Dates : 1855–1912
;Capital : Adelaide
;Currency : 12 pence = 1 shilling; 20 shillings = 1 pound
;See also : Australia

South Bulgaria

;Dates : 1885 only
;Capital : Plovdiv
;Currency : 40 paras = 1 piastre
;Refer : Bulgarian Territories

South China (People's Post)

;Dates : 1949 only
;Currency : 100 cents = 1 dollar
;Refer : CPR Regional Issues

South East Saxony (Russian Zone)

;Dates : 1945–1946
;Capital : Dresden
;Currency : 100 pfennige = 1 mark
;Refer : Germany (Allied Occupation)

South Georgia

;Dates : 1963–1980
;Capital : Grytviken
;Currency : 12 pence = 1 shilling; 20 shillings = 1 pound
;Refer : South Georgia & South Sandwich Islands

South Georgia (Falkland Islands Dependencies)

Stamps of Falkland Islands overprinted SOUTH GEORGIA.
;Dates : 1944–1946
;Capital : Grytviken
;Currency : 12 pence = 1 shilling; 20 shillings = 1 pound
;Refer : Falkland Islands Dependencies

South Georgia & South Sandwich Islands

A continuation of the South Georgia issues but with the inscription changed to acknowledge the South Sandwich
Islands as part of the same territory. The South Sandwich Islands have never had any permanent inhabitants.
;Dates : 1980–
;Capital : Grytviken
;Currency : 100 pence = 1 pound
;Main Article Needed : Postage stamps and postal history of South Georgia and the South Sandwich Islands
;Includes : South Georgia

South Kasai

;Dates : 1961–1962
;Capital : Lusambo
;Currency : 100 centimes = 1 franc
;Refer : Zaire

South Korea

;Dates : 1946–
;Capital : Seoul
;Currency : 100 chon = 1 won
;Main Article Postage stamps and postal history of South Korea

South Korea (North Korean Occupation)

;Dates : 1950 only
;Currency : 100 chon = 1 won
;Refer : North Korea

South Lithuania (Russian Occupation)

Russian forces in Grodno issued Arms types of Russia with an overprint of LIETUVA and a surcharge
in local currency.
;Dates : 1919 only
;Currency : 100 skatiku = 1 auksinas
;Refer : Russian Occupation Issues

South Orkneys (Falkland Islands Dependencies)

;Dates : 1944–1946
;Currency : 12 pence = 1 shilling; 20 shillings = 1 pound
;Refer : Falkland Islands Dependencies

South Russia

;Refer : Russian Civil War Issues

South Shetlands (Falkland Islands Dependencies)

;Dates : 1944–1946
;Currency : 12 pence = 1 shilling; 20 shillings = 1 pound
;Refer : Falkland Islands Dependencies

South Sudan

;Dates : 2011-
;Capital : Juba
;Currency : 100 piaster = 1 pound
;Main Article Postage stamps and postal history of South Sudan

South Vietnam

;Dates : 1955–1976
;Capital : Saigon
;Currency : 100 cents = 1 piastre
;Main Article Needed :
;See also : National Front for Liberation of South Vietnam;

South West Africa

;Dates : 1923–1991
;Capital : Windhoek
;Currency : 12 pence = 1 shilling; 20 shillings = 1 pound
;Main Article Needed :
;See also : German South West Africa;

South West China (People's Post)

;Dates : 1949–1950
;Currency : 100 cents = 1 dollar
;Refer : CPR Regional Issues

Southern Cameroons

;Dates : 1960–1961
;Capital : Mamfe
;Currency : 12 pence = 1 shilling; 20 shillings = 1 pound
;Refer : Nigerian Territories

[Postage stamps and postal history of the [Southern Nigeria Protectorate|Southern Nigeria]]

;Dates : 1901–1914
;Capital : Enugu
;Currency : 12 pence = 1 shilling; 20 shillings = 1 pound
;Refer : Nigerian Territories

Southern Rhodesia

;Dates : 1924–1964
;Capital : Salisbury
;Currency : 12 pence = 1 shilling; 20 shillings = 1 pound
;Refer : Rhodesia

Southern Yemen

;Dates : 1968–1971
;Capital : Aden
;Currency : 1000 fils = 1 dinar
;Refer : Yemen

Southern Zone, Morocco

;Dates : 1956–1958
;Capital : Rabat
;Currency : 100 centimes = 1 franc
;Refer : Morocco
;See also : French Morocco