San Blas, the Spanish name for Saint Blaise, may refer to:
Places Argentina San Blas de los Sauces, in La Rioja Province San Blas, La Rioja, in La Rioja Province San Blas de los Sauces Department, in La Rioja Province
Bulgaria Sveti Vlas (Свети Влас), Burgas Province
Ecuador San Blas, Quito
Malta San Blas, Nadur
Mexico San Blas, Nayarit San Blas Atempa, Oaxaca San Blas, Baja California Sur Marismas Nacionales-San Blas mangroves, an ecoregion
Panama Guna Yala, an autonomous territory, formerly called San Blas San Blas Islands, off the Caribbean coast San Blas Range, a mountain range
Paraguay San Blas (Asunción)
Peru San Blas (Cusco), a neighbourhood in the historic city centre of Cusco
Spain San Blas (Madrid), a district of Madrid San Blas (Madrid Metro), a station on Line 7 Church of San Blas (Villarrobledo)
United States Cape San Blas, part of a peninsula in Gulf County, Florida Church San Blas de Illescas of Coamo Puerto Rico
See also San Blas jay, a bird of Mexico Blas (disambiguation)