Chile
Spanish

China
Standard Chinese or Mandarin (Putonghua, based on the Beijing
dialect), Yue (Cantonese), Wu (Shanghaiese), Minbei (Fuzhou), Minnan
(Hokkien-Taiwanese), Xiang, Gan, Hakka dialects, minority languages
(see Ethnic groups entry)

Christmas Island
English (official), Chinese, Malay

Cocos (Keeling) Islands
Malay (Cocos dialect), English

Colombia
Spanish

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)

Cook Islands
English (official), Maori

Costa Rica
Spanish (official), English