John Bernard Tapp (born August 6, 1988) is a Canadian former competitive swimmer and a 2008 Olympian.

He is currently the Canadian short course record-holder in the 100-metre and 200-metre backstroke events, and the 100-metre individual medley.

[4] He attended the University of Arizona, and swam for the Arizona Wildcats men's swimming and diving team from 2006 to 2010, and was a member of the Wildcats' NCAA Championship team in 2008.

[8] Tapp was born to Canadian parents in Ridgewood, New Jersey, and was raised in Langley, British Columbia.

He has one brother, Charlie, who is also a Canadian swimmer and was a member of the University of Nevada's swimming team.