| Position: | Running back |
| Birth Date: | 10 August 1895 |
| Birth Place: | Chicago, Illinois |
| Death Place: | Palm Beach, Florida |
| Height Ft: | 5 |
| Height In: | 10 |
| Weight Lbs: | 178 |
| High School: | Chicago (IL) Hyde Park |
| College: | Chicago |
| Pastteams: |
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| Statlabel1: | Games played |
| Statvalue1: | 43 |
| Statlabel2: | Games started |
| Statvalue2: | 32 |
| Statlabel3: | Touchdowns |
| Statvalue3: | 6 |
| Pfr: | AnnaDu20 |
Duncan Colin Annan (August 10, 1895June 21, 1981) was a professional American football player who played running back for six seasons for the Chicago Tigers, the Toledo Maroons, the Hammond Pros, and the Akron Pros/Indians.[1] He signed with the Toledo Maroons in September 1922. He attended Brown University, where he played as a halfback.[2]