Brian Edmund Peter Keenan (January 28, 1943 – October 5, 1985) was an American musician, best known as the drummer for the Chambers Brothers.

[2] Prior to joining The Chambers Brothers, Keenan was a member of the Ondine night club house band, The Losers which was formed around 1965.

Referred to as a funky blues rock pop band, the group is said to have been made up of Joe Nessor (bass and vocal), Tony Sal (Guitar and vocal), Brian Keenan (drums) and a guitarist possibly called Russell.

The Chambers Brothers predated Sly and the Family Stone as harbingers of psychedelic soul.

Keenan also wrote one of its early songs, "Love Me Like the Rain," which appeared on the Shout album.