50 selected
- Tahiti
- Taiwan
- Tajikistan
- Tajikistan - Illegal Stamps
- Tanganyika
- Tanger - Franse post
- Tangier - British post office
- Tangier - Cinderella
- Tangier - Spanish post office
- Tanzania
- Tanzania - Illegal Stamps
- Tasmania
- Téte
- Thailand (Siam)
- Thrace
- Thule
- Thurn und Taxis
- Tibet
- Timor - Oecusse - Cinderella
- Tobago
- Togo
- Tokelau
- Tonga
- Transcaucasia
- Transkei
- Transnistria
- Transvaal
- Triest - Venezia Giulia
- Triest - Zone A
- Triest - Zone B
- Trinidad and Tobago
- Tristan da Cunha
- Tunisia
- Turkey (Türkiye)
- Türkiye (Turkey)
- Turkmenistan
- Turkmenistan - Illegal Stamps
- Turks and Caicos Islands
- Turks and Caicos Islands - Caicos
- Tuva
- Tuva - Illegal Stamps
- Tuvalu
- Tuvalu - Funafuti
- Tuvalu - Nanumaga
- Tuvalu - Nanumea
- Tuvalu - Niutao
- Tuvalu - Nui
- Tuvalu - Nukufetau
- Tuvalu - Nukulaelae
- Tuvalu - Vaitupu
- Not filled in