Canadian National class O-9 0-6-0
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 and Detroit and Toledo Shore Line Railroad 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. The sole survivor of this class is number 7312, which has been owned by the Strasburg Rail Road since 1960.
| Builder | Works numbers | Dates | CN numbers | GT numbers | Notes |
| GT shops | 1430-1454 1490-1499 | 1903-1907 | 7124-7152 7184-7189 | 1650-1684 | |
| Baldwin | 25140 | 1905 | 7218 | built as D&TSL number 101 | |
| ALCO | 42061-42070 42327-42330 | 1907 | 7153-7154 7190-7201 | 1685-1698 | |
| Baldwin | 32852-32853 32859-32860 32871-32872 32885-32886 32893-32894 | 1908 | 7155-7157 7202-7208 | 1699-1708 | |
| Lima | 1200-1209 | 1912 | 7158 7209-7217 | 1709-1718 | |
| MLW | 50662-50671 | 1912 | 7159-7168 | 1719-1728 | |
| CLC | 1099-1113 | 1913 | 7169-7183 | 1729-1743 | |
| Baldwin | 39241 | 1913 | 7219 | built as D&TSL number 104 |