Ocean Island

[Coded [gn] (Gilbert and Ellice Islands) before Oct. 1978]

USE  Kiribati

Oe-Cussi

[Coded [pt] (Portuguese Timor) before Jan. 1978]

USE  Timor-Leste

Oeno Atoll

USE  Pitcairn Island

Ohio  [ohu]  Authorities & Vocabularies

Okinawa

[Coded [ry] (Ryukyu Islands, Southern) before Jan. 1978]

USE  Japan

Oklahoma  [oku]  Authorities & Vocabularies

Oman  [mk]  Authorities & Vocabularies

UF    Kuria Muria Islands

Muscat and Oman

Oman, Trucial

USE  United Arab Emirates

Ontario  [onc]  Authorities & Vocabularies

Oregon  [oru]  Authorities & Vocabularies

Orkney Islands

USE  United Kingdom Misc. Islands

Oroluk Atoll

USE  Micronesia (Federated States)

Orona Atoll

[Coded [gn] (Gilbert and Ellice Islands) before Oct. 1978]

USE  Kiribati

Otu Tolu

USE  Tonga

Outer Mongolia

USE  Mongolia

See also:

Country Name Sequence