| Rodrigo Díaz | |
| Fullname: | Rodrigo Joaquín Díaz Castelló |
| Birth Date: | 31 August 1988 |
| Nationality: | Chilean |
| Position: | Right back |
| Years1: | 2007–2013 |
| Clubs1: | Club Italiano |
| Years2: | 2014 |
| Clubs2: | Handebol Londrina |
| Years3: | 2014–2021 |
| Clubs3: | Club Italiano |
| Nationalteam1: | Chile |
| Nationalcaps1: | 32 |
| Nationalgoals1: | 60[1] |
Rodrigo Joaquín Díaz Castelló (born 31 August 1988) is a Chilean former handball player for the Chilean national team. He is also a well known Medal of Honor Allied Assault player, who won his first Chilean National Championship in 2008.