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.
This biographical article relating to a Canadian football wide receiver is a stub.