Heard Island and McDonald Islands
lowest point: Indian Ocean 0 m
highest point: Mawson Peak, on Big Ben 2,745 m
Holy See (Vatican City)
lowest point: unnamed location 19 m
highest point: unnamed location 75 m
Honduras
lowest point: Caribbean Sea 0 m
highest point: Cerro Las Minas 2,870 m
Hong Kong
lowest point: South China Sea 0 m
highest point: Tai Mo Shan 958 m
Howland Island
lowest point: Pacific Ocean 0 m
highest point: unnamed location 3 m
Hungary
lowest point: Tisza River 78 m
highest point: Kekes 1,014 m
Iceland
lowest point: Atlantic Ocean 0 m
highest point: Hvannadalshnukur 2,119 m (at Vatnajokull glacier)
India
lowest point: Indian Ocean 0 m
highest point: Kanchenjunga 8,598 m
Indian Ocean
lowest point: Java Trench -7,258 m
highest point: sea level 0 m
Indonesia
lowest point: Indian Ocean 0 m
highest point: Puncak Jaya 5,030 m