John Brullaghhaun[1] (John O'Brolchain) was an Irish prelate[2] of the Roman Catholic Church in the mid 18th century.

[3] Brullaghhaun was born in County Londonderry.

[4] He was educated at Douai, Flanders.

He served as Bishop of Derry from 1749 until his death a year later.

This article about an Irish Catholic bishop or archbishop is a stub.