| Settlement Type: | town |
| Official Name: | San Sebastián de Buenavista |
| 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: | 1748 |
| Area Footnotes: | [1] |
| Area Total Km2: | 421 |
| Population As Of: | Census 2018[2] |
| Population Total: | 18865 |
| Population Density Km2: | auto |
| Utc Offset: | -5 |
| Website: | www.sansebastiandebuenavista-magdalena.gov.co |
San Sebastián de Buenavista is a town and municipality of the Colombian Department of Magdalena. Founded in 1748 by Fernando de Mier y Guerra with the name San Sebastián de Melchiquejo, but was later changed on November 15, 1957 when it was erected municipality.
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