| Annan Knudsen | |
| Birth Date: | 23 November 1887 |
| Birth Place: | Drammen, Norway |
| Death Place: | Oslo, Norway |
| Weight: | 67 kg |
| Sport: | Rowing |
| Club: | Christiania Roklub, Oslo KNS, Oslo |
Andreas "Annan" Knudsen (23 November 1887 – 11 February 1982) was a Norwegian sailor and rower.[1]
Knudsen competed in the 1908 Summer Olympics with the men's eight in rowing where they were eliminated in round one. At the 1920 Summer Olympics, he was a crew member of the Norwegian boat Marmi which won the silver medal in the 6 metre class (1907 rating).[2]