| Duncan Ross | |
| Smallimage: | Duncan Ross.jpg |
| Constituency Mp: | Yale—Cariboo |
| Parliament: | Canadian |
| Predecessor: | William Alfred Galliher |
| Successor: | Martin Burrell |
| Term Start: | 1904 |
| Term End: | 1908 |
| Birth Date: | 15 May 1870 |
| Birth Place: | Bruce County, Ontario, Canada |
| Party: | Liberal |
Duncan Ross (May 15, 1870 - June 30, 1915) was a Canadian publisher, railway contractor, and politician, born in Bruce County, Ontario. He represented the constituency of Yale–Cariboo as a Liberal from 1904 until 1908, when he lost his seat to the Conservative Martin Burrell. His attempt to retake the seat in 1911 failed.
He also served as an alderman in Greenwood, British Columbia.