Fernando Flávio Marques de Almeida (February 18, 1916 – August 2, 2013) was a Brazilian geologist considered to be one of the top Brazilians concerned with the study. Almeida did the central works to understand the South American geology. He is the son of the first Brazilian generation of geologists who did the pioneering papers of the continent's geology. Marques de Almeida is a member of the Brazilian Academy of Sciences.