Newton Wesley Rowell, PC KC (November 1, 1867 – November 22, 1941) was a Canadian lawyer, politician and judge, as well as a lay leader in the Methodist Church. Rowell led the Ontario Liberal Party from 1911 to 1917 and put forward a platform advocating temperance. Rowell's Liberals failed to oppose the Whitney government's passage of Regulation 17 which restricted the teaching of the French language in schools and alienated the province's French-Canadian minority.