Floyd Sherman Chalmers (September 14, 1898 - April 26, 1993) was a Canadian editor, publisher and philanthropist.
Born in Chicago, Illinois, to Canadian parents he was raised in Orillia, Ontario and Toronto, Ontario.
He was president of the Maclean Hunter from 1952 to 1964 and was its chairman of the board until 1969.
In 1968 he was appointed Chancellor of York University.
He wrote Both Sides of the Street: One Man’s Life in Business and the Arts in Canada in 1983.
In 1967 he was made an Officer of the Order of Canada and was promoted to Companion in 1984.