word | | Country name |
| Hebrides | Vanuatu | conventional long form: Republic of Vanuatu conventional short form: Vanuatu local long form: Ripablik blong Vanuatu local short form: Vanuatu former: New Hebrides |
| Helena | Saint Helena | conventional long form: none conventional short form: Saint Helena |
| Hellenic | Greece | conventional long form: Hellenic Republic conventional short form: Greece local long form: Elliniki Dhimokratia local short form: Ellas or Ellada former: Kingdom of Greece |
| Henderson | Pitcairn Islands | conventional long form: Pitcairn, Henderson, Ducie, and Oeno Islands conventional short form: Pitcairn Islands |
| Hercegovina | Bosnia and Herzegovina | ... form: none conventional short form: Bosnia and Herzegovina local long form: none local short form: Bosna i Hercegovina former: People's Republic of Bosnia and Herzegovina, Socialist Republic of Bosnia and Herzegovina |
| Herzegovina | Bosnia and Herzegovina | conventional long form: none conventional short form: Bosnia and Herzegovina local long form: none local short form: Bosna i Hercegovina former: People's Republic of Bosnia and Herzegovina, Socialist Republic of Bosnia ... |
| HIMI | Heard Island and McDonald Islands | conventional long form: Territory of Heard Island and McDonald Islands conventional short form: Heard Island and McDonald Islands abbreviation: HIMI |
| HK | Hong Kong | conventional long form: Hong Kong Special Administrative Region conventional short form: Hong Kong local long form: Xianggang Tebie Xingzhengqu local short form: Xianggang abbreviation: HK |
| Hoa | Vietnam | conventional long form: Socialist Republic of Vietnam conventional short form: Vietnam local long form: Cong Hoa Xa Hoi Chu Nghia Viet Nam local short form: Viet Nam abbreviation: SRV |
| Hoi | Vietnam | conventional long form: Socialist Republic of Vietnam conventional short form: Vietnam local long form: Cong Hoa Xa Hoi Chu Nghia Viet Nam local short form: Viet Nam abbreviation: SRV |
| Holy | Holy See (Vatican City) | conventional long form: The Holy See (State of the Vatican City) conventional short form: Holy See (Vatican City) local long form: Santa Sede (Stato della Citta del Vaticano) local short form: Santa ... |