Octavia Estelle Butler was an American science fiction author and a multiple recipient of the Hugo and Nebula awards. In 1995, Butler became the first science-fiction writer to receive a MacArthur Fellowship.
Octávio Brandão Rego was a Brazilian pharmacist, politician and activist. He was also a militant and theoretician in the Brazilian Communist Party, a movement that influenced a generation of left-wing activists and was responsible for spreading Marxist concepts in Brazil.
Octavio Paz Lozano was a Mexican poet and diplomat. For his body of work, he was awarded the 1977 Jerusalem Prize, the 1981 Miguel de Cervantes Prize, the 1982 Neustadt International Prize for Literature, and the 1990 Nobel Prize in Literature.
Octavius Freire Owen FSA was an English scholastic Aristotelian philosopher, translator, and clergyman, rector of Burstow, Surrey; and domestic chaplain to the Duke of Portland.