Duarte is a Portuguese given name of Spanish origin, derived from the given name Theodore, which means "gift of God". It has been widely used throughout Portugal and its former colonies, particularly in Brazil. The name Duarte was especially prominent during the 15th century, as it was borne by several notable historical figures, including King Duarte I of Portugal (1391-1438), who was known for his efforts to expand Portuguese trade and exploration along the African coast.
The name Duarte experienced a gap of 14 years between the first and second birth peaks, followed by consistent intervals of 3 to 4 years for subsequent peaks.