Luna City is the name of a fictional colony on the Moon in science fiction stories, comic books, and games by numerous authors.
Poul Anderson "Brake" (Anderson), from The Psychotechnic League
Isaac Asimov "Waterclap"
Robert A. Heinlein Have Space Suit—Will Travel Job: A Comedy of Justice The Moon Is A Harsh Mistress Future History stories, including "It's Great to Be Back!" "Space Jockey" "The Menace from Earth"
John Varley The Eight Worlds stories
Other Judge Dredd (comic book) Moon Patrol (arcade video game) Mutant Chronicles (role-playing game)