| Born: | August 7, 1998 | Draft: | 2018 Sharks #182 Overall |
| Hometown: | Westwood, NJ | Position: | LW/RW |
| Known For: | Ryan Leonard‘s brother | Shoots: | Left |
| National Team: | United States | Current Team: | Detroit Red Wings |
John Gerard Leonard (born August 7, 1998) is an American professional ice hockey player who is a forward for the Detroit Red Wings of the National Hockey League (NHL). Leonard was drafted in the sixth round, 182nd overall, by the San Jose Sharks in the 2018 NHL Entry Draft.

John Leonard Statistics
Achievements
- 2024-25
- AHL All-Star Game (Atlantic)
- AHL Second All-Star Team
- 2019-20
- Hobey Baker Memorial Award Finalist
- NCAA (East) First All-American Team
- NCAA (Hockey East) First All-Star Team
- NCAA (Hockey East) Three Stars Award
- NCAA (New England) All-Star Team
- NCAA (New England) Best Forward
- NCAA (Overall) Most Goals (27)
- NCAA (USCHO) Third Team
- 2018-19
- NCAA (Hockey East) Regular Season Champion
- NCAA (Hockey East) Second All-Star Team