| Aníbal Guillermo Ávalos | |
| Sport: | Track & Field |
| Event: | 800m & 4x400m relay |
| Birth Date: | 1923 2, df=yes |
| Birth Place: | Olavarria, Argentina |
| Death Place: | Béccar, Argentina |
Guillermo Avalos (23 February 1923 – 19 March 1978) was an Argentine athlete who competed in the 1948 Summer Olympics in the 800m and relay, but he failed to advance past the first round in either event.
Avalos died in Béccar on 19 March 1978, at the age of 55.[1]