thumb|Judge Ralph Maybank
H. Ralph Maybank (August 17, 1890 – March 19, 1965) was a politician from Manitoba, Canada. He served in the Legislative Assembly of Manitoba from 1932 to 1935, and in the House of Commons of Canada from 1935 to 1951. Maybank was a member of the Liberal Party of Canada.
The son of John Maybank and Marion Bates, Maybank was born in London, Ontario. He served in the Royal Flying Corps during World War I. He was educated at the University of Manitoba, receiving a Bachelor of Arts degree (1919) and a law degree (1922). He was called to the Manitoba bar in 1923. In 1927, Maybank married Dora Boys.
He first ran for the Manitoba legislature in the provincial election of 1927, in the Winnipeg constituency. On November 30, 1947, he was promoted to parliamentary assistant to the Minister of National Health and Welfare. On January 25, 1949, he was named assistant to the Minister of Mines and Resources. and the surrounding area is known as Maybank.
Maybank had three sons: John (deceased), Roger, and Micky (deceased).