San Blas, the Spanish name for Saint Blaise, may refer to:
- San Blas, Nayarit
- San Blas, Sinaloa
- San Blas Atempa, Oaxaca
- San Blas, Baja California Sur
- Marismas Nacionales-San Blas mangroves, an ecoregion
- Kuna Yala, an autonomous territory, formerly called San Blas
- San Blas Islands, off the Caribbean coast
- San Blas Range, a mountain range
- Puerto Rico
- San Blas (Cusco), a neighbourhood in the historic city centre of Cusco
- United States
- San Blas jay, a bird of Mexico
|This disambiguation page lists articles about distinct geographical locations with the same name.
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