The Canadian League was a minor league baseball league that operated in Canada in the 19th and early 20th centuries.
The first version of the league operated in 1885, then from 1896–1899, becoming a Class-D league in 1899 and merging into the International League in 1900.
In 1905 there was a four-team class D loop known as the Canadian League. Another league using that title ran from 1911 through 1915 — it was originally ranked a D league as well, moved to a C rating a year later and in 1914 got a B classification. Frank Shaughnessy managed the Ottawa team from 1913 to 1915.
The league briefly returned in 1905 and then operated again from 1911 to 1915.