John William Wallace (born 1 April 1962 in Burlington, Ontario) is a retired rower from Canada. He competed in two consecutive Summer Olympics for his native country, starting in 1988.
At his second appearance, he was a member of the team that won the gold medal in the Men's Eights. He was once married to fellow rower Silken Laumann, and he is brother-in-law to Daniele Laumann.