Cook Islands
lowest point: Pacific Ocean 0 m
highest point: Te Manga 652 m

Coral Sea Islands
lowest point: Pacific Ocean 0 m
highest point: unnamed location on Cato Island 6 m

Costa Rica
lowest point: Pacific Ocean 0 m
highest point: Cerro Chirripo 3,810 m

Cote d'Ivoire
lowest point: Gulf of Guinea 0 m
highest point: Monts Nimba 1,752 m

Croatia
lowest point: Adriatic Sea 0 m
highest point: Dinara 1,831 m

Cuba
lowest point: Caribbean Sea 0 m
highest point: Pico Turquino 2,005 m

Curacao
lowest point: Caribbean Sea 0 m
highest point: Mt. Christoffel, 372m

Cyprus
lowest point: Mediterranean Sea 0 m
highest point: Mount Olympus 1,951 m

Czech Republic
lowest point: Elbe River 115 m
highest point: Snezka 1,602 m

Denmark
lowest point: Lammefjord -7 m
highest point: Mollehoj/Ejer Bavnehoj 171 m