Flag of São Paulo

The flag of the state of São Paulo, Brazil, serves as one of the state's symbols, along with the state's coat of arms and anthem. It was designed by the philologist and writer Júlio Ribeiro in 1888, with his brother-in-law, Amador Amaral, a graphic artist. The flag has thirteen black and white stripes and a red rectangle in the upper left corner holding a white circle enclosing an outline map of Brazil in blue. There is a yellow star in each corner of the red rectangle.

Originally intended for the entire country, the flag became the de facto symbol of the state of São Paulo after the constitutionalist revolution of 1932, but was only adopted officially in 1946 after the new federal constitution gave the states and municipalities the right to create their own symbols of flags, seals/coats of arms.