Alfredo Augusto Lopes Pimenta (3 December 1882, Guimarães – 15 October 1950, Lisbon) was a Portuguese historian, poet and writer.
In 1915 he appeared as a contributor of the Portuguese Nation magazine, organ of the political philosophy of Integralismo Lusitano, and ended up becoming a militant monarchist and became a prominent counselor.
This passage toward the monarchy occurred soon after the coup of 14 May 1915, which overthrew the government of Pimenta de Castro, supported by evolutionists.
He joined The Voice, which advocated the restoration of the monarchy but as a sort of crowning of the Estado Novo, which contrasted with the time he wrote Mentira Monarchica (Monarchist Lies) in 1906.
He was a renowned political theorist and historian, and his most enduring contribution was in the field of history, especially of the Middle Ages.