| Liam Colahan | |
| Nationality: | Zimbabwean |
| Birth Date: | 20 May 1990 |
| Birth Place: | Harare, Zimbabwe |
| Sport: | Rowing |
| Show-Medals: | yes |
Liam Colahan (born 20 May 1990) is a former Zimbabwean rower. Along with his brother Ryan, he won a bronze medal in the men's lightweight double sculls at the 2007 All-Africa Games.[1] He also competed at the 2007 and 2008 World Rowing Junior Championships.[2]