Gabriel Beauchesne-Sévigny aka OAG - Olympic Athlete Gabriel (born December 11, 1984, in Montreal) is a Canadian sprint canoeist who has competed since the late 2000s.
At the 2008 Summer Olympics in Beijing, he finished fifth in the C-2 500 m event and sixth in the C-2 1000 m event.
He is a brother of Geneviève Beauchesne-Sévigny.