Greg Egan is an Australian science fiction writer and mathematician, renowned for his hard science fiction works. Born on August 20, 1961, in Perth, Australia, he has a background in mathematics, graduating from the University of Western Australia, and has worked professionally as a computer programmer.

Egan's writing is characterized by themes of mathematical, philosophical, and metaphysical inquiry, particularly the nature of consciousness. His works often explore genetics, simulated reality, mind transfer, asexuality, and artificial intelligence. Early in his career, he incorporated elements of supernatural horror into his stories.

Among his accolades, Egan has received the John W. Campbell Memorial Award for his novel "Permutation City" in 1995, and the Hugo and Locus Awards in 1998 for his short story "Oceanic." He is celebrated within the science fiction genre for addressing complex and technical subjects, innovatively utilizing new physics and epistemology.