São Julião may refer to:
People São Julião, Portuguese for Saint Julian
Places Brazil São Julião (Piauí), a municipality in the State of Piauí Portugal São Julião (Gouveia), a civil parish in the municipality of Gouveia São Julião (Portalegre), a civil parish in the municipality of Portalegre São Julião (Setúbal), a civil parish in the municipality of Setúbal São Julião (Valença), a civil parish in the municipality of Valença São Julião da Figueira da Foz, a civil parish in the municipality of Figueira da Foz São Julião de Montenegro, a civil parish in the municipality of Chaves São Julião de Palácios, a civil parish in the municipality of Bragança São Julião dos Passos, a civil parish in the municipality of Braga São Julião do Tojal, a civil parish in the municipality of Loures