Guarujá is a municipality located in the state of São Paulo, Brazil. It serves as part of the Metropolitan Region of the Baixada Santista and covers an area of 143.58 km2 (55.44 sq mi). The name of the city originates from the Tupi language and translates to "narrow path."
The municipality is characterized by a highly urbanized population of 311,116 people. It functions as a second urban core and features a beachfront island situated across the river from São Vicente Island. While the island is coterminous with the municipality, small offshore locations such as Ilha dos Arvoredos are excluded.