Mervin C. Tweed, MP (born August 6, 1955 in Medora, Manitoba) is a retired politician in Manitoba, Canada. He represented Brandon—Souris in the Canadian House of Commons from 2004 to August 31, 2013. Prior to that he was a member of the Legislative Assembly of Manitoba from 1995 to 2004, representing the constituency of Turtle Mountain.Tweed was born in Medora, Manitoba, and was educated at Brandon University.