One child

One child may refer to:


 * One Child, a 1980 American memoir
 * "One Child" (Mariah Carey song), a 2010 Christmas song
 * "One Child" (Savatage song), a 1996 heavy metal song
 * One-child policy, the population control policy of the People's Republic of China
 * OneChild, a Canadian-based, non-governmental organization
 * One Child (TV series), a 2016 TV series