Ottawa Senators (original) – History of Ottawa Hockey Club, senior-level team which played from 1883, and operated as the NHL Senators until 1934. (1883–1954).
Ottawa Senators (baseball) – the name used by two different minor league baseball teams. The first played in the Canadian League from 1912 to 1915, while the second played in the Canadian–American League in 1936 before being renamed the Ottawa Braves in 1937.