| Domingo Amaizón | |
| Full Name: | Domingo Amaizón Mastroianni |
| Sport: | Middle-distance running |
| Event: | Steeplechase |
| Birth Date: | 22 April 1936 |
| Birth Place: | Córdoba, Argentina |
Domingo Amaizón Mastroianni (born 22 April 1936) is an Argentine middle-distance runner. He competed in the men's 3000 metres steeplechase at the 1968 Summer Olympics.[1]