Michael McKeegan (born 25 March 1971) is a Northern Irish musician best known as the bassist of rock band Therapy?.

In 1988, McKeegan (bass/vocals), along with his two brothers Ciaran (guitar) and Charlie (drums), formed a heavy metal band, Evil Priest.

[1] In 1989, while McKeegan was still at school, his classmate Fyfe Ewing handed him a four song cassette that he had recorded with Andy Cairns, entitled "Thirty Seconds of Silence".

The group played live around Northern Ireland and recorded a demo at Einstein Studios in County Antrim.

[3] In November 2014, McKeegan along with Andy Cairns recorded 15 tracks for a side project called East Antrim in Belfast's Start Studio with fellow Northern Irish musicians including Robyn G Shiels, Desert Hearts, Brian Coney, LaFaro and Goons.

In August 2015, McKeegan contributed bass to recordings of an original song "Purveyor of Quackery" and a cover of "Another Girl Another Planet" by The Only Ones.

members Andy Cairns and Neil Cooper, alongside 'Diamond' Dave Thompson on vocals and Rich Jones on lead guitar, was known as The Gemils.

Backing vocals were contributed by Ricky Warwick, Tim Wheeler, Robyn G Shiels, Tom Dalgety and Stevie Firth.