Canadian National class O-9 0-6-0
 Canadian National Railway (CN) Class O-9 steam locomotives were of 0-6-0 wheel arrangement in the Whyte notation or  C  in UIC classification. These locomotives were built for the Grand Trunk Railway (GT) and Detroit and Toledo Shore Line Railroad (D&TSL) from 1903 through 1913. Many were scrapped during the 1930s although some survived into the 1950s with sequential renumbering into the CN 7200 series in 1952 and 7300 series in 1956.