Mungo Turnbull Lewis (November 13, 1894 – January 12, 1969) was a politician in Manitoba, Canada.
The Liberal-Progressives formed a minority government after the election, and Lewis served with his party on the opposition benches.
The Conservatives joined the Liberal-Progressives in a coalition government in 1940, and in this manner Lewis became a backbench supporter of John Bracken's administration.
He was defeated in the 1945 provincial election, losing to Progressive Conservative candidate W.J.
Lewis established a veterinary practice in Winnipeg during his legislative career, and continued to practise in the city after leaving political life.