Harold Proctor Shewman (April 14, 1900 in Winnipeg, Manitoba – July 13, 1968) was a politician in Manitoba, Canada. He served as a member of the Legislative Assembly of Manitoba from 1949 until his death in 1968. Shewman was educated at Wellington School in Winnipeg. He moved to Morris with his family in 1915. He was a partner in his father's construction business and later worked as an auctioneer and insurance agent. He was a school trustee from 1925 to 1938, and served as mayor of the Town of Morris from 1948 to 1954, coinciding with his early period in the legislature.