Florence May "Flo" Campbell (née Johnson, 1893–1959) was a Canadian artist known for her landscape oil paintings of the Owen Sound area, including Grey County’s Presque Isle and Balmy Beach. Born into a family of eleven daughters, two of whom, Annie and Agnes, were also artists, Flo was part of the artistic group known as "the painting Johnsons." She married fellow artist Alan Campbell in 1914, and together, they displayed their work at their home in Owen Sound. Flo served as President of the Lyceum Club and Women's Art Association, where she contributed to the local art scene. A painting by Campbell, depicting a wooded pathway in autumn, was used as a memorial for a local teacher at Dunn's School. After her death, a memorial exhibition of 59 of her works was held in Owen Sound. Her legacy endures through works held in local collections, including the Grey Roots Museum & Archives.