Castanho

Castanho (, meaning brown) is a common surname in Portuguese.
 * Abraham Castanho (17th century), Spanish poet
 * Bianca Castanho (1979), Brazilian actress
 * José Carlos Castanho de Almeida (1930–2022), Brazilian Roman Catholic prelate
 * Klara Castanho (2000), Brazilian actress and singer
 * Luiz Castanho de Almeida (1904–1981), Brazilian historian
 * Thiago Castanho (1975), Brazilian guitarist, record producer, painter and sculptor