Maurice Louis Bossy (born April 1, 1929 in Orford , Ontario) is a former politician in Ontario, Canada. He was a Liberal member of the Canadian House of Commons from 1980 to 1984, and represented the Ontario Liberal Party in the Legislative Assembly of Ontario from 1985 to 1990.

Bossy was educated at Paincourt , Ontario, and worked for many years as a farmer. He served as a school board trustee from 1967 to 1968, and was a member of the Canadian Legion and Knights of Columbus.

Bossy was elected to the House of Commons in the federal election of 1980, defeating Progressive Conservative incumbent Bob Holmes by 837 votes in the southwestern Ontario riding of Kent . He served as parliamentary secretary to the Minister of Supply and Services from March 1 to September 30, 1982, and to the Secretary of State of Canada from October 1, 1982 to February 29, 1984.

The Liberals were defeated in the 1984 federal election, and Bossy lost his seat to Progressive Conservative Elliott Hardey by over 5,000 votes. The following year, he ran for the Ontario Liberal Party in the riding of Chatham—Kent , and defeated incumbent Progressive Conservative Andy Watson by 1,134 votes. The Liberals formed a minority government after this election. Bossy was not appointed to cabinet of David Peterson, but served as parliamentary assistant to the Minister of Housing in 1987. He was re-elected by an increased margin in the 1987 provincial election, in which Peterson's Liberals won a landslide majority.

The Liberals were unexpectedly defeated in the 1990 provincial election, and Bossy lost his seat to New Democrat Randy Hope by almost 4,000 votes. He has not sought a return to provincial politics since this time.

In 1994, Bossy signed a petition calling for the introduction of an ethanol industry in Canada.