| Domingo Peppo | |
| Office: | Argentine ambassador to Paraguay |
| Term Start: | 29 January 2020 |
| Term End: | 10 December 2023 |
| Predecessor: | Héctor Lostri |
| Office1: | Governor of Chaco |
| Vicegovernor1: | Daniel Capitanich |
| Term Start1: | 10 December 2015 |
| Term End1: | 10 December 2019 |
| Predecessor1: | Jorge Capitanich |
| Successor1: | Jorge Capitanich |
| Office2: | Mayor of Villa Ángela |
| Term Start2: | 10 December 2003 |
| Term End2: | 10 December 2015 |
| Predecessor2: | Carlos Lobera |
| Successor2: | Adalberto Papp |
| Birth Date: | 6 July 1958 |
| Birth Place: | Santo Tomé, Corrientes Province, Argentina |
| Party: | Justicialist Party |
| Alma Mater: | National University of the Northeast |
Oscar Domingo Peppo (born 6 July 1958) is an Argentine politician. He was elected governor of the Chaco Province in 2015 (with 55.42% of the vote).[1] In the early 1980s, he received a degree in construction, hydraulic and civil engineering in Resistencia and later worked as technical representative and general coordinator of the silo plants for a company. He also previously served as mayor of Villa Ángela.[2] On he was appointed Argentinian ambassador to Paraguay.[3]