China
18 years of age; universal
Cocos (Keeling) Islands
NA
Colombia
18 years of age; universal
Comoros
18 years of age; universal
Congo, Democratic Republic of the 18 years of age; universal and compulsory
Congo, Republic of the
18 years of age; universal
Cook Islands
NA years of age; universal adult
Costa Rica
18 years of age; universal and compulsory
Cote d'Ivoire
18 years of age; universal
Croatia
18 years of age; universal (16 years of age, if employed)