Joseph Monteith should not be confused with Joseph Monteith (Deputy Lieutenant).
| Joseph Monteith | |
| Office1: | Ontario MPP |
| Term Start1: | 1923 |
| Term End1: | 1934 |
| Predecessor1: | Wellington Hay |
| Successor1: | Riding abolished |
| Constituency1: | Perth North |
| Party: | Conservative |
| Birth Date: | 2 June 1865 |
| Birth Place: | Stratford, Canada West |
| Education: | Trinity College, Toronto |
| Occupation: | Physician |
| Spouse: | Alice Mary Chowen (m. 1895) |
| Relations: | Andrew Monteith, father Jay Monteith, son |
Joseph Dunsmore Monteith (June 2, 1865 - January 8, 1934) was an Ontario MLA for Perth North from 1923 to 1934. He was treasurer from 1926 to 1930 and Minister of Labour, Public Works and Highways from 1930 to 1934.
Monteith, a physician born near Stratford, was the son of Andrew Monteith. He was educated in Stratford and studied medicine at Trinity College, Toronto. In 1895, he married Alice Mary Chowen. He served as mayor of Stratford from 1917 to 1918. Monteith defeated Francis Wellington Hay to win the seat in the provincial assembly in 1923. He died in office in 1934.
His son Jay Waldo Monteith later became a member of the House of Commons.