word | | Geography - note |
| Cartier | Ashmore and Cartier Islands | Ashmore Reef National Nature Reserve established in August 1983; Cartier Island Marine Reserve established in 2000 |
| Caspian | World | ... is generally defined as being the Ural Mountains and the Ural River; on the southeast the Caspian Sea; and on the south the Caucasus Mountains, the Black Sea, and the Mediterranean. Africa ... |
| Castel | Holy See (Vatican City) | ... Lateran Treaty of 1929 grants the Holy See extraterritorial authority over 23 sites in Rome and five outside of Rome, including the Pontifical Palace at Castel Gandolfo (the Pope's summer residence |
| castor | Ethiopia | ... of the Nile by water volume, rises in T'ana Hayk (Lake Tana) in northwest Ethiopia; three major crops are believed to have originated in Ethiopia: coffee, grain sorghum, and castor bean |
| cattle | Uruguay | second-smallest South American country (after Suriname); most of the low-lying landscape (three-quarters of the country) is grassland, ideal for cattle and sheep raising |
| Caucasus | Armenia | landlocked in the Lesser Caucasus Mountains; Sevana Lich (Lake Sevan) is the largest lake in this mountain range |
| Caucasus | Georgia | strategically located east of the Black Sea; Georgia controls much of the Caucasus Mountains and the routes through them |
| Caucasus | World | ... Mountains and the Ural River; on the southeast the Caspian Sea; and on the south the Caucasus Mountains, the Black Sea, and the Mediterranean. Africa's northeast extremity is frequently delimited at ... |
| Cayman | Jamaica | strategic location between Cayman Trench and Jamaica Channel, the main sea lanes for the Panama Canal |
| cays | Saint Vincent and the Grenadines | the administration of the islands of the Grenadines group is divided between Saint Vincent and the Grenadines and Grenada; Saint Vincent and the Grenadines is comprised of 32 islands and cays |
| Celebes | Philippines | ... is made up of 7,107 islands; favorably located in relation to many of Southeast Asia's main water bodies: the South China Sea, Philippine Sea, Sulu Sea, Celebes Sea, and Luzon Strait |