Gallacher is a surname of Irish origin and is a variant of the Gaelic Ó Gallchóbhair found commonly in Scotland. The name Ó Gallchóbhair has been variously anglicised as Gallagher, Gallaher, Gallaugher, Goligher etc.

Notable people with the surname include:

Brian Gallacher, Scottish footballer Bernard Gallacher, Scottish golfer Frank Gallacher, Scottish-Australian actor Hughie Gallacher, Scottish international footballer (Airdrieonians, Newcastle United) Jim Gallacher, Scottish football goalkeeper (Clydebank) Kevin Gallacher, Scottish football player and TV sports pundit Kirsty Gallacher, Scottish television presenter often specialising in sport programmes Liz Gallacher, British film music supervisor Mike Gallacher, Australian politician Pat Gallacher, Scottish footballer (Partick Thistle, Tottenham Hotspur, Luton Town) Pat Gallacher (footballer, born 1913) (1913–1983), Scottish footballer Patrick Gallacher,"Patsy", Scottish international footballer (Sunderland, Stoke City, Scotland) Patsy Gallacher, Irish footballer (Celtic) Paul Gallacher, Scottish international football goalkeeper (Dundee United, Norwich City, Dunfermline Athletic, St Mirren, Partick Thistle) Skeets Gallacher (1925–2013), Scottish boxer Stephen Gallacher, Scottish golfer Stirling Gallacher, English TV and stage actress Tom Gallacher, Scottish playwright Tommy Gallacher (1922–2001), Scottish footballer (Dundee) Willie Gallacher, Scottish trade unionist, activist and communist

See also Gallagher (surname)