Crumlin may refer to:
Northern Ireland Crumlin, Belfast, a ward of North Belfast Crumlin, County Antrim, a town in County Antrim Crumlin railway station, Northern Ireland, County Antrim Crumlin Viaduct (Northern Ireland), County Antrim Crumlin United F.C. (Northern Ireland), a Northern Irish club Crumlin Road, Belfast Crumlin Road Gaol, a former prison Crumlin Road Courthouse
Republic of Ireland Crumlin, County Westmeath, a townland in the civil parish of Rathaspick Crumlin, Dublin, a suburb of Dublin Crumlin GAA, a Gaelic Athletic Association in Dublin Crumlin United F.C.
Wales, UK Crumlin, Caerphilly, a town in Caerphilly County Borough Crumlin Viaduct