Gerard Collier, 5th Baron Monkswell (born 28 January 1947) is a British hereditary peer.
He was educated at Portsmouth Polytechnic (BSc Mechanical Eng, 1971) and Slough Polytechnic. He succeeded to the title Baron Monkswell in 1984, and was a Member of the House of Lords from 1985 to 1999. He was a Labour Party Member of Manchester City Council from 1989 to 1994.
Lord Monkswell has been an unsuccessful candidate to by-elections to the House of Lords in 2003, 2005, and 2011.