| Settlement Type: | town |
| Official Name: | San Zenón |
| Mapsize: | 200px |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Type2: | Department |
| Subdivision Name: | Colombia |
| Subdivision Name1: | Caribbean |
| Leader Title: | Mayor |
| Established Title: | Foundation |
| Established Date: | 1751 |
| Population As Of: | 2005 |
| Population Note: | [1] |
| Population Total: | 8749 |
| Utc Offset: | -5 |
| Website: | www.santaana-magdalena.gov.co |
San Zenón (pronounced as /es/) is a town and municipality of the Colombian Department of Magdalena. It was founded in 1751 by Antonio de Mier y Guerra. On April 30, 1950, it was elevated to the category of municipality.