Quick answer
Gallagher is a boy name.
Pronunciation: American English /ˈɡæl.ə.ɡəɹ/; British English /ˈɡæl.ə.ɡə/.
Meaning and history
From an Irish surname, the Anglicized form of Irish Gaelic Ó Gallchobhair, derived from the given name Gallchobhar.
Notes and context
Usage: english