| Douglas Munro Campbell | |
| Office1: | Ontario MPP |
| Term Start1: | 1934 |
| Term End1: | 1943 |
| Predecessor1: | Philip James Henry |
| Successor1: | Wesley Gardiner Thompson |
| Constituency1: | Kent East |
| Party: | Liberal |
| Birth Date: | 25 February 1889 |
| Birth Place: | Harwich Township, Kent County |
| Death Date: | 1986 |
| Occupation: | Farmer |
| Spouse: | Janet Rowe |
Douglas Munro Campbell (February 25, 1889 - 1986) was a farmer and politician in Ontario, Canada. He represented Kent East in the Legislative Assembly of Ontario from 1934 to 1943 as a Liberal and then Liberal-Progressive member.
The son of Malcolm Campbell and Robina Munro, both natives of Scotland, he was born in Harwich Township, Kent County and was educated in Ridgetown and Chatham. In 1914, he married Janet Rowe, the daughter of Major Rowe.[1]
Campbell was elected to the Ontario assembly in a 1934 by-election.[1] He was reelected in 1934 and 1937.