São Martinho (Portuguese for "Saint Martin") may refer to the following places:

• São Martinho dos Tigres

• São Martinho, Rio Grande do Sul
• São Martinho, Santa Catarina

• São Martinho das Amoreiras, a parish in the municipality of Odemira
• São Martinho do Porto, a parish in the municipality of Alcobaça
• São Martinho de Angueira, a parish in the municipality of Miranda do Douro
• São Martinho (Alcácer do Sal), a parish in the municipality of Alcácer do Sal
• São Martinho (Covilhã), a parish in the municipality of Covilhã
• São Martinho (Seia), a parish in the municipality of Seia
• São Martinho (Sintra), a parish in the municipality of Sintra
• São Martinho (Funchal), a parish in the municipality of Funchal, Madeira
• São Martinho River, a river that is a tributary of the Sado River in Portugal

• São Martinho, Portuguese Navy galleon
• São Martinho, one of the world's largest sugarcane processing operations

This disambiguation page lists articles associated with the title São Martinho.
If an internal link led you here, you may wish to change the link to point directly to the intended article.