| Position: | Defense |
| Played For: | Boston University ECHL |
| Height Ft: | 6 |
| Height In: | .01 |
| Weight Lb: | 208 |
| Birth Date: | 1 May 1980 |
| Birth Place: | Duxbury, Massachusetts |
| Draft Team: | Boston Bruins |
| Draft: | 236th overall |
| Draft Year: | 1999 |
| Career Start: | 2002 |
| Career End: | 2005 |
John Cronin (born May 1, 1980) is an American former ice hockey defenseman who played three seasons of professional hockey in the American Hockey League and ECHL from 2003 to 2005. He was selected by the Boston Bruins in the eighth round (236th overall) of the 1999 NHL Entry Draft. He graduated from Noble and Greenough School and was drafted as a senior, playing four years at Boston University.[1]