Johnny Weissmuller
Apr 5 Johnny Weissmuller sets world records in both the 100m and 200m free style swimming events
- Apr 13 Stanley Cup Final, Ottawa Auditorium, Ottawa, ON: Ottawa Senators beat Boston Bruins, 3-1 for a 2-0-2 series win
31st Boston Marathon
Apr 18 31st Boston Marathon won by Clarence DeMar in 2:40:22.2; his 5th victory in the event