| César Hernández Alfonzo | |
| Order: | Member of the Puerto Rico House of Representatives from the 15th District |
| Term Start: | January 2, 2013 |
| Term End: | January 2, 2017 |
| Predecessor: | Arnaldo Jiménez Valle |
| Successor: | Joel I. Franqui Atiles |
| Birth Date: | 27 July 1977 |
| Birth Place: | Hatillo, Puerto Rico |
| Alma Mater: | University of Puerto Rico at Río Piedras |
| Party: | Popular Democratic Party (PPD) |
César Hernández Alfonzo (born July 27, 1977) is a Puerto Rican politician affiliated with the Popular Democratic Party (PPD). He was elected to the Puerto Rico House of Representatives in 2012 to represent District 15. In 2020 César Hernández Alfonzo was named superintendent of the Capitol of Puerto Rico.