Jaime Zuzarte Cortesão (29 April 1884 – 14 August 1960) was a Portuguese medical doctor, politician, historian and writer.

In 1921, he wrote several articles in the review Atlantida[1] and the periodical Seara Nova.

As he was a democrat and a republican, he was one of the first leaders of counter-rebellion in Porto in 1927 against the Authoritarian National dictatorship (later Estado Novo) He was sent into exile into France and in 1940 into Brazil.

Some of the work he did as a historian was related to Portuguese discoveries in the New World.

He suggested that the Bianco world map depicted part of the coast of Brazil before 1448.This was later refuted by Abel Fontoura da Costa who proved that it actually depicted Santiago.