| Duncan MacMillan | |
| Fullname: | Duncan MacMillan |
| Birth Date: | 18 January 1922 |
| Birth Place: | Glasgow, Scotland |
| Death Place: | Grimsby, England |
| Position: | Defender |
| Youthclubs1: | Maryhill Harp |
| Years1: | 1946–1949 |
| Clubs1: | Celtic |
| Caps1: | 18 |
| Goals1: | 0 |
| Years2: | 1949–1954 |
| Caps2: | 188 |
| Goals2: | 2 |
| Years3: | 1954–1955 |
| Caps3: | 1 |
| Goals3: | 0 |
| Totalcaps: | 207 |
| Totalgoals: | 2 |
Duncan McMillan (18 January 1922 – 20 May 1992) was a Scottish professional footballer who played as a defender.[1]