| Robert Duffus | |
| Fullname: | Robert Morrice Duncan Duffus |
| Birth Date: | 27 February 1891 |
| Birth Place: | Aberdeen, Scotland |
| Death Place: | Aberdeen, Scotland |
| Position: | Half back |
| Youthclubs1: | Aberdeen Richmond |
| Years1: | 1915–1919 |
| Years2: | 1919–1920 |
| Years3: | 1921–1922 |
| Years4: | 1922–1923 |
| Years5: | 1923–1924 |
| Clubs1: | Dundee |
| Clubs2: | Dumbarton[1] |
| Clubs3: | Millwall |
| Clubs4: | Clapton Orient |
| Clubs5: | Accrington Stanley |
| Caps2: | 34 |
| Goals2: | 2 |
Robert Morrice Duncan Duffus (27 February 1891 – 19 March 1949) was a Scottish footballer who played for Dundee, Dumbarton, Millwall, Clapton Orient and Accrington Stanley.[2]