Frank Oliver Fowler (14 December 1861 – 18 February 1945) was a Canadian politician serving as a member of the Legislative Assembly of Manitoba, then in Winnipeg city politics as an alderman and subsequently as the 29th Mayor. He moved from Ontario to the Brandon, Manitoba region in the early 1880s where he was a farmer. He established a grain company in Wawanesa in 1891 and became a leader in regional grain industry associations after Fowler and his family moved to Winnipeg in 1902. His name is commemorated by Fowler Street in Winnipeg.