Greece:
1829 (from the Ottoman Empire)

Greenland:
none (part of the Kingdom of Denmark; self-governing
overseas administrative division of Denmark since 1979)

note: foreign affairs is the responsibility of Denmark, but
Greenland actively participates in international agreements relating
to Greenland

Grenada:
7 February 1974 (from UK)

Guadeloupe:
none (overseas department of France)

Guam:
none (territory of the US)

Guatemala:
15 September 1821 (from Spain)

Guernsey:
none (British crown dependency)

Guinea:
2 October 1958 (from France)

Guinea-Bissau:
24 September 1973 (unilaterally declared by
Guinea-Bissau); 10 September 1974 (recognized by Portugal)