| Office: | Prime Minister of Peru |
| Term Start: | 30 August 1975 |
| Term End: | 31 January 1976 |
| President: | Francisco Morales-Bermúdez |
| Predecessor: | Francisco Morales-Bermúdez |
| Successor: | Jorge Fernández Maldonado Solari |
| Office2: | Minister of War |
| Term Start2: | 30 August 1975 |
| Term End2: | 31 January 1976 |
| Predecessor2: | Francisco Morales-Bermúdez |
| Successor2: | Jorge Fernández Maldonado Solari |
| Office3: | General Commander of the Peruvian Army |
| Term Start3: | 30 August 1975 |
| Term End3: | 31 January 1976 |
| Predecessor3: | Francisco Morales-Bermúdez |
| Successor3: | Jorge Fernández Maldonado Solari |
| Allegiance: |  Peru |
| Rank: | Division general |
Óscar Vargas Prieto (August 8, 1917 – January 17, 1989) was a Peruvian soldier and politician. He was the Prime Minister of Peru (August 1975 – January 1976).[1] [2]