Platonia may refer to: Platonia, a plant genus in the family Clusiaceae Platonia (philosophy), a hypothetic timeless realm by Julian Barbour containing every possible momentary configuration of the universe Platonia (place), a place under the St. Sebastian basilica on the Via Appia in Rome Platonia dilemma, a game theory introduced in Douglas Hofstadter's book Metamagical Themas a 1998 novel by Romanian writer Mirela Roznoveanu a synonym for Neurolepis, a bamboo genus in the family Poaceae a fictional planet in the 1962 science fiction-themed children's television show Fireball XL5