S
- St. Christopher
- St. Helena
- St. Lucia
- St. Pierre et Miquelon
- St. Vincent
- Saint-Nazaire
- Samoa (German)
- Sarawak
- Senegal
- Senegal-Niger
- Seychelles
- Shanghai
- Sicily
- Sierra Leone
- Singapore
- Slesvig Plebiscit
- South Africa
- South Australia
- South West Africa
- Southern Nigeria
- Southern Rhodesia
- Spanish West Indies
- Stellaland
- Straits Settlements
- Suriname
- Swaziland
- Sweden
- Syria