| Country | Diplomatic representation from the US |
| Greenland | none (self-governing overseas administrative division of Denmark) |
| Grenada | chief of mission: the US Ambassador to Barbados is accredited to Grenada embassy: Lance-aux-Epines Stretch, Saint George's mailing address: P. O. Box 54, Saint George's telephone: [1] (473) 444-1173 through 1177 FAX: [1] (473) 444-4820 |
| Guam | none (territory of the US) |
| Guatemala | chief of mission: Ambassador Stephen G. MCFARLAND embassy: 7-01 Avenida Reforma, Zone 10, Guatemala City mailing address: APO AA 34024 telephone: [502] 2326-4000 FAX: [502] 2326-4654 |
| Guernsey | none (British crown dependency) |
| Guinea | chief of mission: Ambassador (vacant); Charge d'Affaires Elizabeth RASPOLIC embassy: Koloma, Conakry, east of Hamdallaye Circle mailing address: B. P. 603, Transversale No. 2, Centre Administratif de Koloma, Commune de Ratoma, Conakry telephone: [224] 65-10-40-00 FAX: [224] 65-10-42-97 |
| Guinea-Bissau | the US Embassy suspended operations on 14 June 1998 in the midst of violent conflict between forces loyal to then President VIEIRA and military-led junta; the US Ambassador to Senegal is accredited to Guinea-Bissau |
| Guyana | chief of mission: Ambassador John Melvin JONES embassy: US Embassy, 100 Young and Duke Streets, Kingston, Georgetown mailing address: P. O. Box 10507, Georgetown; US Embassy, 3170 Georgetown Place, Washington DC 20521-3170 telephone: [592] 225-4900 through 4909 FAX: [592] 225-8497 |
| Haiti | chief of mission: Ambassador Janet A. SANDERSON embassy: Tabarre 41, Route de Tabarre, Port-au-Prince mailing address: use mailing address telephone: [509] 229-8000 FAX: [509] 229-8028 |
| Heard Island and McDonald Islands | none (territory of Australia) |
| Holy See (Vatican City) | chief of mission: Ambassador (vacant); Charge d'Affaires Julieta NOYES embassy: Villa Domiziana, Via delle Terme Deciane 26, 00153 Rome mailing address: PSC 833, Box 66, APO AE 09624 telephone: [39] (06) 4674-3428 FAX: [39] (06) 575-3411 |
| Honduras | chief of mission: Ambassador Hugo LLORENS embassy: Avenida La Paz, Apartado Postal No. 3453, Tegucigalpa mailing address: American Embassy, APO AA 34022, Tegucigalpa telephone: [504] 236-9320, 238-5114 FAX: [504] 238-4357 |