Clontarf may refer to:
Placenames
Australia Clontarf, New South Wales Clontarf, Queensland, a suburb of the Moreton Bay Region Clontarf, Queensland (Toowoomba Region), a locality in the Toowoomba Region
Ireland Clontarf, Dublin
United States Clontarf, Minnesota
Other Battle of Clontarf, 1014 Clontarf (ship), New Zealand immigration ship of 1858–60 Clontarf (whiskey), an Irish brand Clontarf FC, a rugby union club based in Clontarf, Dublin Clontarf Foundation, an Australian non-profit educational foundation for indigenous students Clontarf Aboriginal College, the current name of a former orphanage in the Perth suburb of Waterford in Western Australia.