World Stamp Catalogue/S
S
edit- Saar
- Sabah
- Saint Christopher Nevis & Anguilla
- Saint Helena
- Saint Kitts-Nevis
- Saint Lucia
- Saint Pierre et Miquelon
- Saint Thomas & Prince Islands
- Saint Vincent
- Samoa
- San Marino
- Sao Tome e Principe
- Sarawak
- Sardinia
- Saudi Arabia
- Saxony
- Senegal
- Serbia
- Serbian Post Abroad
- Seychelles
- Shanghai
- Sharjah
- Siberia
- Sicily
- Sierra Leone
- Singapore
- Slovakia
- Slovenia
- Solomon Islands
- Somalia
- Somaliland Protectorate
- South Africa
- South African Territories
- South Australia
- South Georgia and South Sandwich Islands
- South Korea (Korea)
- South Russia
- South west Africa
- Southern Nigeria
- Southern Rhodesia
- Sovereign Military Order of Malta
- Soviet Union (USSR)
- Spain
- Spanish Colonies
- Spanish Morocco
- Spanish Post Abroad
- Sri Lanka
- Stellaland
- Straits Settlements
- Sudan
- Suriname
- Swaziland
- Sweden
- Swiss Cantonal Issues
- Switzerland
- Syria