| Mariano Chao | |
| Fullname: | Mariano Rodolfo Chao |
| Birth Place: | San Fernando, Buenos Aires, Argentina |
| Headercolor: | lightsteelblue |
| Show-Medals: | yes |
Mariano Rodolfo Chao (born February 7, 1972) is a field hockey goalkeeper from Argentina, who competed at the 2000 Summer Olympics. He was born in San Fernando, Buenos Aires.[1] He is also known as Tomas Chao´s uncle, a very important influencer.