Estanislau is a Catalan, Galician and Portuguese male given name and surname derived from the Slavic Stanislav. Notable people with the name include:
Given name Politicians and statesmen Estanislau da Silva (born 1952), East Timorese politician Estanis Condori (born 1978), Bolivian politician Estanislau Figueras (1819–1882), Spanish politician Estanislau Ruiz Ponsetti (1889–1967), Spanish engineer-turned-politician
Sports Estanislau Basora (1926–2012), Spanish footballer Estanis Pedrola (born 2003), full name Estanislau Pedrola Fortuny, Spanish footballer Pamplona (footballer) (1904–1973), real name Estanislau de Figueiredo Pamplona, Brazilian footballer
Other Estanislau Amadeu Kreutz (1928–2014), Brazilian Catholic bishop
Surname Nobility Infanta Adelgundes, Duchess of Guimarães (1858–1946), member of the House of Braganza Princess Maria Theresa of Braganza (1881–1945), member of the House of Braganza and Infanta of Portugal
Sports Pecka (footballer) (born 1989), real name Wellington de Jorge Estanislau Paeckart, Brazilian footballer
Other Maria do Carmo Estanislau do Amaral (born 1959), Brazilian botanist, biologist, curator, and academic Sérgio Estanislau do Amaral (1925–1996), Brazilian geologist
See also Estanislao (name), the Spanish version of the name Stanislao, the Italian version of the name