| Country | Languages |
| Burkina Faso | French (official), native African languages belonging to Sudanic family spoken by 90% of the population |
| Burma | Burmese (official) note: minority ethnic groups have their own languages |
| Burundi | Kirundi (official), French (official), Swahili (along Lake Tanganyika and in the Bujumbura area) |
| Cambodia | Khmer (official) 95%, French, English |
| Cameroon | 24 major African language groups, English (official), French (official) |
| Canada | English (official) 58.8%, French (official) 21.6%, other 19.6% (2006 Census) |
| Cape Verde | Portuguese (official), Crioulo (a blend of Portuguese and West African words) |
| Cayman Islands | English (official) 95%, Spanish 3.2%, other 1.8% (1999 census) |
| Central African Republic | French (official), Sangho (lingua franca and national language), tribal languages |
| Chad | French (official), Arabic (official), Sara (in south), more than 120 different languages and dialects |
| Chile | Spanish (official), Mapudungun, German, English |
| China | Standard Chinese or Mandarin (Putonghua, based on the Beijing dialect), Yue (Cantonese), Wu (Shanghainese), Minbei (Fuzhou), Minnan (Hokkien-Taiwanese), Xiang, Gan, Hakka dialects, minority languages (see Ethnic groups entry) note: Mongolian is official in Nei Mongol, Uighur is official in Xinjiang Uygur, and Tibetan is official in Xizang (Tibet) |
| Christmas Island | English (official), Chinese, Malay |
| Clipperton Island | void |
| Cocos (Keeling) Islands | Malay (Cocos dialect), English |
| Colombia | Spanish (official) |
| Comoros | Arabic (official), French (official), Shikomoro (a blend of Swahili and Arabic) |
| Congo, Democratic Republic of the | French (official), Lingala (a lingua franca trade language), Kingwana (a dialect of Kiswahili or Swahili), Kikongo, Tshiluba |
| Congo, Republic of the | French (official), Lingala and Monokutuba (lingua franca trade languages), many local languages and dialects (of which Kikongo is the most widespread) |