Newton Wesley Rowell, (November 1, 1867 – November 22, 1941) was a Canadian lawyer and politician and leading lay figure 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 alienating the province's French-Canadian minority.