| Juan Machuca | |
| Fullname: | Juan de Dios Machuca Valdés |
| Birth Date: | 7 March 1951 |
| Birth Place: | Santiago, Chile |
| Position: | Defender |
| Clubs1: | Unión Española |
| Nationalteam1: | Chile |
Juan de Dios Machuca Valdés (born 7 March 1951) is a Chilean football defender who played for Chile in the 1974 FIFA World Cup.[1] He also played for Unión Española.