| Guillermo Arellano | |
| Fullname: | José Guillermo Arellano Moraga |
| Height: | 1.74 m |
| Birth Date: | 21 August 1908 |
| Birth Place: | Chile |
| Position: | Attacker |
| Years1: | ? |
| Nationalyears1: | 1930 |
| Nationalteam1: | Chile |
| Nationalcaps1: | 1 |
| Nationalgoals1: | 0 |
Guillermo Arellano Moraga (21 August 1908 – 16 February 1999) was a Chilean football attacker.