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.