| Duncan J. Campbell | |
| Birth Date: | 1845 |
| Birth Place: | Margaree Forks, Nova Scotia |
| Death Place: | Port Hood, Nova Scotia |
| Alma Mater: | Harvard College |
| Occupation: | Physician, politician |
| Known For: | Representing Inverness County in the Nova Scotia House of Assembly |
| Spouse(S): | Elizabeth Smyth (m. 1874) |
| Children: | Peter Smyth Campbell |
Duncan J. Campbell (1845[1] - November 15, 1882[2]) was a physician and political figure in Nova Scotia, Canada. He represented Inverness County in the Nova Scotia House of Assembly from 1872 to 1883 as a Conservative member.
He was born in Margaree Forks, Nova Scotia. He was the son of Samuel Campbell and Ann McDonald.[3] Campbell was educated at Harvard College. He was first elected to the provincial assembly in an 1872 by-election held after S. McDonnell resigned from his seat. In 1874, he married Elizabeth Smyth, the daughter of Peter Smyth, who had previously sat for Inverness in the provincial assembly.[1] Campbell died in office[4] at Port Hood.[2]
His son Peter Smyth Campbell later served as Deputy Minister of Health for the province.[3]