Alexandre St-Jean (born 10 May 1993) is a Canadian speed skater who is specialized in the sprint distances.

St-Jean started his speed skating career as a short tracker.

He won his first-ever World Cup medal, a gold medal in the team sprint event, at the World Cup in Salt Lake City in November 2015.

In December he won a silver medal when he finished second in the World Cup 500m event in Inzell.

St-Jean qualified to compete for Canada at the 2018 Winter Olympics.