Citybook I: Butcher, Baker, Candlestick Maker is a role-playing game supplement published by Flying Buffalo in 1982 as part of their Catalyst series of game aids for any role-playing game system. It was written by Steve Crompton, and includes information on how to use typical medieval urban businesses in role-playing encounters. It won an Origins Award and received positive reviews in game periodicals including The Space Gamer, Different Worlds, Dragon, and White Dwarf.