Gilla Brigte of Angus is the one of the earliest attested Mormaers of Angus. He was possibly a descedant of Dubacan of Angus.

Gilla Brigte is recorded as a witness to a charter dating to 1150. He probably fathered both Adam and Gilla Críst. He was dead by 1189, when his son Adam was the Mormaer.