| Ryan Colahan | |
| Nationality: | Zimbabwean |
| Birth Date: | 22 February 1989 |
| Birth Place: | Harare, Zimbabwe |
| Sport: | Rowing |
| Show-Medals: | yes |
Ryan Colahan (born 22 February 1989) is a former Zimbabwean rower. Along with his brother Liam, he won a bronze medal in the men's lightweight double sculls at the 2007 All-Africa Games.[1] He also competed at the 2006 and 2007 World Rowing Junior Championships.[2]