| Juan Gauthier | |
| Birth Name: | Juan Ignacio Gauthier |
| Birth Date: | 3 March 1982 |
| Birth Place: | Buenos Aires, Argentina |
| Weight: | 78 kg, 171 lbs |
| Ru Position: | Utility Back |
| Youthyears1: | |
| Years1: | |
| Clubs1: | Rome |
| Superyears1: | |
| Repyears1: | 2008 |
| Repteam1: | Argentina |
| Repcaps1: | 2 |
| Reppoints1: | 15 |
| Ru Sevensnationalyears1: | |
Juan Ignacio Gauthier (born March 3, 1982, in Buenos Aires) is an Argentine rugby union footballer who plays at fullback.
He had 2 caps for Argentina national rugby union team, in 2008, and scored 3 tries, 15 points on aggregate. He played for Hindú Club and currently plays for Rome.