62 selected
- Baden
- Baden - French zone
- Bahamas
- Bahawalpur
- Bahrain
- Bangladesh
- Barbados
- Barbuda
- Basutoland
- Batumi
- Batumi - Illegal Stamps
- Bavaria
- Bechuanaland
- Belarus
- Belgian Congo
- Belgian Congo [1886-1908] - Free State
- Belgium
- Belgium – Eupen
- Belgium – Eupen and Malmedy
- Belgium - Malmedy
- Belgium [1916-1922] - Occupation of German East Africa
- Belgium [1919-1920] - Occupation of the German Reich
- Belize
- Belize - Cayes
- Benin
- Benin - Illegal Stamps
- Bergedorf
- Berlin
- Bermuda
- Bhutan
- Biafra
- Bohemia and Moravia
- Bolivia
- Bophuthatswana
- Bosnia and Herzegovina
- Bosnia and Herzegovina - Croatian Post
- Bosnia and Herzegovina - Serbian Post
- Botswana
- Brazil
- Bremen
- British Antarctic Territory
- British Central Africa
- British Columbia and Vancouver Island
- British East Africa
- British East Africa and Uganda
- British East Africa Company
- British Guiana
- British Honduras
- British Indian Ocean Territory
- British South Africa Company
- British Virgin Islands
- Brunei
- Brunei - Occupation by Japan
- Brunswick
- Bulgaria
- Bulgaria [1916-1917] - Occupation of Romania
- Burkina Faso
- Burkina Faso - Illegal Stamps
- Burma (Myanmar)
- Burma - Occupation by Japan
- Burundi
- Burundi - Illegal Stamps
- Not filled in