Madeleine Moon (born 27 March 1950) is a British Labour Party politician, who was the Member of Parliament (MP) for Bridgend from 2005 to 2019, when she lost her seat to the Welsh Conservative candidate Jamie Wallis.

In 2007 and 2008, Moon received a higher public profile due to an increased number of suicides of young people in her constituency.

[3] She supported Owen Smith in the failed attempt to replace Jeremy Corbyn in the 2016 Labour leadership election.

[7] The Daily Telegraph, which extensively covered MPs' expenses during the United Kingdom parliamentary expenses scandal, reported that Moon had claimed for furniture items bought near her primary residence in Wales; claims are allowed for her second home in London but not for her primary residence in Wales.

[8] She married the ecologist Steve Moon in 1983 in Ogwr, Mid Glamorgan; the couple had one son David, born in May 1984.