List of countries that have used postal orders

This is a list of countries that have used postal orders.

British Empire and British Commonwealth

 * Colony of Aden
 * Aden Protectorate States
 * Alderney
 * Anguilla
 * Antigua
 * Antigua and Barbuda
 * Ascension Island
 * Australia (classed by issuing state and territory).
 * Australian Capital Territory
 * The Bahamas
 * Bangladesh
 * Barbados
 * Basutoland (overprinted South African British postal orders issued in Basutoland).
 * Bechuanaland Protectorate
 * Belize
 * Bermuda
 * Bophuthatswana
 * Botswana
 * British Cameroons
 * British Central Africa Protectorate
 * British Guiana
 * British Honduras
 * British North Borneo
 * British Solomon Islands Protectorate
 * British Somaliland Protectorate
 * British Virgin Islands
 * Brunei
 * Colony of Burma
 * Canada (classed by issuing province and territory).
 * Cape of Good Hope (Cape Colony)
 * Ceylon
 * Christmas Island (Indian Ocean)
 * Ciskei
 * Cocos (Keeling) Islands
 * Cyprus
 * Dominica
 * East Africa (classed by country of issue - British Somaliland Protectorate, Kenya, Tanganyika, Uganda, and Zanzibar).
 * Falkland Islands
 * Fiji
 * The Gambia
 * Ghana
 * Gibraltar
 * Gilbert and Ellice Islands
 * Gold Coast
 * Grenada
 * Guernsey
 * Guyana
 * Gwalior
 * Colony of Hong Kong
 * India
 * Isle of Man
 * Jamaica
 * Jersey
 * Jhind
 * Kenya
 * Lagos
 * Lesotho
 * Malawi
 * British Malaya (classed by issuing state and territory).
 * Malaysia (classed by issuing state and territory).
 * Malta
 * Mauritius
 * Montserrat
 * Nabha
 * Namibia
 * Colony of Natal
 * New Guinea
 * New South Wales
 * New Zealand
 * Nigeria
 * Niue
 * Norfolk Island
 * Northern Rhodesia
 * Northern Territory
 * Nyasaland
 * Orange Free State
 * Orange River Colony
 * Pakistan
 * Palestine
 * Territory of Papua
 * Papua and New Guinea
 * Papua New Guinea
 * Patiala
 * Pitcairn Islands
 * Queensland
 * Rhodesia
 * Rhodesia and Nyasaland (classed by colony of issue - Nyasaland, Northern Rhodesia, and Southern Rhodesia).
 * Saint Helena
 * Saint Kitts and Nevis
 * Saint Lucia
 * Saint Vincent and the Grenadines
 * Kingdom of Sarawak (from 1908, when the British postal order system was extended there)
 * Colony of Sarawak
 * Sark
 * Seychelles
 * Sierra Leone
 * Singapore
 * South Africa
 * South African Republic
 * Federation of South Arabia
 * South Australia
 * South West Africa
 * Southern Nigeria
 * Southern Rhodesia
 * Sri Lanka
 * Straits Settlements (classed by issuing state and territory).
 * Swaziland
 * Tanganyika
 * Tanzania (classed by whether they were issued in Tanganyika or Zanzibar).
 * Tasmania
 * Tonga
 * Transkei
 * Transvaal Colony
 * Trinidad
 * Trinidad and Tobago
 * Tristan da Cunha
 * Turks Islands
 * Uganda
 * United Kingdom (classed by constituent country of issue - England, Ireland/Northern Ireland, Scotland, and Wales).
 * Venda
 * Victoria (Australia)
 * Western Australia
 * Western Samoa
 * Zambia
 * Zanzibar
 * Zimbabwe

Other countries

 * Argentina
 * Bahrain
 * Bulgaria
 * Republic of Burma
 * China (Since 1898)
 * Colombia
 * Dubai
 * Ecuador
 * Egypt
 * Eritrea - overprinted British Postal Orders valid only in Eritrea
 * Ethiopia
 * France
 * Germany
 * Iraq
 * Israel
 * Ireland
 * Italy
 * Jordan
 * Kuwait
 * Kingdom of Libya - during the reign of King Idris I
 * Luxembourg
 * Mexico
 * Kingdom of Nepal
 * Persian Gulf (GPO agencies)
 * Portugal
 * Qatar
 * Romania
 * Russia (at the time of the Russian Empire)
 * San Marino
 * Southern Yemen
 * Sudan
 * Thailand
 * Transjordan
 * United Arab Republic
 * United States of America
 * People's Democratic Republic of Yemen

Special military issues

 * British Army of the Rhine
 * British Forces Post Offices
 * Indian Field Force in Egypt