Major General Robert Rennie CB CMG DSO MVO VD (December 15, 1862 – December 17, 1949) was the son of William Rennie, the founder of , a successful wholesaler and retailer of both vegetable and floral seeds, and Sarah Glendinning. William retired in 1888, and Robert and two younger brothers John and Thomas took over management of the firm. Robert served as the firm's President until he retired in 1925, when Thomas became President. Robert ran unsuccessfully as a candidate for the Liberal Party of Canada, for the Federal riding of North Toronto after he stepped down from the family firm.