Milligan is a Gaelic name with a strong presence in the north of Ireland.
Where does the Milligan name come from?
Milligan is an anglicised form of the Gaelic Ó Maolagáin, a diminutive based on maol, meaning “bald” or “tonsured” — often in the sense of a devotee or follower who wore the monastic tonsure. It is closely related to names such as Mulligan, which shares the same root.
Milligan in Ireland
The name is associated particularly with Ulster, including counties Derry, Tyrone and Donegal, where Milligan families have long been settled. As an old Gaelic name, it appears in several spellings and is found today across Ireland and among the diaspora in the United States, Canada, Australia and Britain.
Related Irish family names
You may also like Molloy, Morley, and Barry.
Carry the Milligan name with you
We craft heritage gifts for thousands of Irish and Scottish family names — mugs, woven blankets, ornaments and more. To find yours, type it into the search bar at the top of the page, or browse the Milligan collection here.
Frequently asked questions
Is Milligan an Irish surname?
Yes — Milligan is a Gaelic Irish surname, from Ó Maolagáin, associated especially with Ulster.
What does Milligan mean?
It is a diminutive based on maol, “bald” or “tonsured,” in the sense of a devotee.
Is there a Milligan family crest?
Families of the name have heraldic traditions; the crest and tartan artwork on our Milligan products is created as decorative heritage artwork to celebrate the name.
