| Birth Date: | 3 June 1991 |
| Birth Place: | Toronto, Ontario |
| Height: | 1.89 m |
| Weight: | 91 kg |
| Ru Position: | Fly half |
| Repyears1: | 2013–present |
| Repcaps1: | 13 |
| Reppoints1: | 17 |
Liam Underwood (born 3 June 1991 in Toronto, Ontario) is a rugby union fly-half who plays for Ontario Blues and Canada.Underwood made his debut for Canada in 2013 and was part of the Canada squad at the 2015 Rugby World Cup.[1]