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| Lake Name (short) | Lake Name (in full) | Country |
|---|---|---|
| Cahora Bassa | Cahora Bassa | Mozambique |
| Canandaigua | Canandaigua Lake | USA |
| Caniapiscau | Caniapiscau Reservoir | Canada |
| Canyon | Canyon Lake | USA |
| Capivara | Capivara Reservoir | Brazil |
| Caratasca | Caratasca Lagoon | Honduras |
| Cardiel | Lake Cardiel | Argentina |
| Casa de Piedra | Casa de Piedra Reservoir | Argentina |
| Caspian | Caspian Sea | Azerbaidjan / Iran / Kazakhstan / Russia / Turkmenistan |
| Cayuga | Cayuga Lake | USA |
| Cedar | Cedar Lake | Canada |
| Chad | Lake Chad | Cameroon / Niger / Nigeria / Chad |
| Chamo | Lake Chamo | Ethiopia |
| Champlain | Lake Champlain | Canada / USA |
| Changshou | Lake Changshou | China |
| Chany | Lake Chany | Russia |
| Chao | Lake Chao | China |
| Chapala | Lake Chapala | Mexico |
| Charzykowskie | Lake Charzykowskie | Poland |
| Chascomus | Lake Chascomus | Argentina |
| Cheboksary | Cheboksary Reservoir | Russia |
| Chenghai Sea | Chenghai Sea | China |
| Chervonoje | Lake Chervonoje | Belarus |
| Chicot | Lake Chicot | USA |
| Chilika | Lake Chilika | India |
| Chilwa | Lake Chilwa | Malawi / Mozambique |
| Chini | Lake Chini | Malaysia |
| Chiriqui | Chiriqui Lagoon | Panama |
| Chivero ( McIlwaine ) | Lake Chivero ( McIlwaine ) | Zimbabwe |
| Chuzenji | Lake Chuzenji | Japan |
| Claire | Lake Claire | Canada |
| Clark | Lake Clark | USA |
| Clearwater Lakes | Clearwater Lakes | Canada |
| Cochico | Lake Cochico | Argentina |
| Cocibolca | Lake Cocibolca (Nicaragua) ( Lake Nicaragua ) | Nicaragua |
| Colhue Huapi | Lake Colhue Huapi | Argentina |
| Colorado | Colorado Lagoon | Bolivia |
| Como | Lake Como | Italy |
| Conesus | Conesus Lake | USA |
| Coniston | Coniston | UK |
| Constance | Lake Constance ( Bodensee ) | Austria / Switzerland / Germany |
| Crane Prairie | Crane Prairie Reservoir | USA |
| Crater | Crater Lake | USA |
| Cree | Cree Lake | Canada |
| Crescent | Crescent Lake | USA |
| Crummock | Crummock | UK |
| Cyambwe | Lake Cyambwe | Rwanda |
| Cyohoha Sud | Lake Cyohoha Sud | Burundi / Rwanda |