| Cassidy Doneff | |
| Birth Date: | 14 July 1986 |
| Birth Place: | Cochrane, Alberta, Canada |
| Number: | 80 |
| Import: | no |
| Position1: | Wide receiver |
| Height Ft: | 6 |
| Height In: | 0 |
| Weight Lb: | 183 |
| College: | Washburn University |
| Cfldraftedyear: | 2009 |
| Cfldraftedround: | 6 |
| Cfldraftedpick: | 41 |
| Cfldraftedteam: | Hamilton Tiger-Cats |
| Playing Years1: | 2009 |
| Playing Team1: | Hamilton Tiger-Cats |
| Playing Years2: | 2011–2012 |
| Playing Team2: | Winnipeg Blue Bombers |
| Career Footnotes: | |
| Cfl: | 2217 |
Cassidy Doneff (born July 14, 1986) is a Canadian former professional football wide receiver who played for the Winnipeg Blue Bombers of the Canadian Football League (CFL). He was drafted by the Hamilton Tiger-Cats in the sixth round of the 2009 CFL Draft. He played college football for the Washburn Ichabods. In 2008, Doneff won the Wally Buono Award for the most outstanding junior football player.[1]