| Eva Díaz Tezanos | |
| Office: | Vice President of Cantabria |
| President: | Miguel Ángel Revilla |
| Term Start: | 10 July 2015 |
| Term End: | 8 July 2019 |
| Predecessor: | María José Sáenz de Buruaga |
| Successor: | Pablo Zuloaga |
| Office1: | Regional Minister of Universities, Research, Environment and Social Policy of Cantabria |
| President1: | Miguel Ángel Revilla |
| Term Start1: | 10 July 2015 |
| Term End1: | 8 July 2019 |
| Predecessor1: | María José Sáenz de Buruaga Miguel Ángel Serna Francisco Javier Fernández González |
| Successor1: | Pablo Zuloaga Ana Belén Álvarez Fernández Juan Guillermo Blanco Gómez |
| Office2: | Secretary General of the Socialist Party of Cantabria |
| Term Start2: | 31 March 2012 |
| Term End2: | 16 July 2017 |
| Predecessor2: | Dolores Gorostiaga |
| Successor2: | Pablo Zuloaga |
| Birth Name: | Rosa Eva Díaz Tezanos |
| Birth Date: | 1964 6, df=y |
| Birth Place: | Puente San Miguel, Spain |
| Party: | PSOE |
Rosa Eva Díaz Tezanos (born 12 June 1964) is a Spanish politician from the Spanish Socialist Workers' Party who served as Vice President of Cantabria and Regional Minister of Universities, Research, Environment and Social Policy from 2015 to 2019.[1]