San Carlos
San Carlos, Spanish for Saint Charles, may refer to:
- Fort San Carlos de Austria (early Spanish redoubt built on the barrancas, 1698-1719)
- Fort San Carlos de Barrancas (since 1781, now the site of Fort Barrancas)
- San Carlos Street, an early name for 7th Avenue
- San Carlos Hotel (opened 1910, demolished 1993)