Halligan is a surname of Irish origin, deriving from Irish Ó hAilechain or Ó hAleagain. Bearers include:

Halligan
Pronunciation/ˈhælɪɡən/
Origin
Region of originIreland
Other names
Variant form(s)Ó hAilechain, Ó hAleagain, O'Halligan

See also edit