Ryan Dinwiddie (born November 27, 1980) is the head coach of the Toronto Argonauts and is a former professional Canadian football quarterback. After playing college football, he went undrafted and signed with the Chicago Bears, however he was cut from their training camp. Dinwiddie later went on to play professionally for the Hamburg Sea Devils of NFL Europe, and also played for the Winnipeg Blue Bombers and the Saskatchewan Roughriders of the Canadian Football League.