Éric Castonguay

Éric Castonguay (born September 18, 1987) is a Canadian ice hockey coach and former professional player. He is currently an assistant coach for HC Sierre in the Swiss League (SL).

Playing career Castonguay's career included time with Collège Antoine-Girouard, followed by 3 seasons with the Lewiston Maineiacs of the Quebec Major Junior Hockey League for his Major Junior Ice Hockey career. After having a productive season where he ranked third in the league for scoring, Castonguay signed an extension with the team.

Coaching career Castonguay retired from playing after the 2023–24 season, then was named an assistant coach for HC Sierre for the 2024–25 season, and as a coach for the club's junior teams. He worked alongside his father-in-law Mario Pouliot as the head coach, who had coached him in the previous season, and as a 16-year-old with the Collège Antoine-Girouard Gaulois.