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