Creature of Havoc is a single-player roleplaying gamebook written by British game designer Steve Jackson (not to be confused with the US game designer of the same name), illustrated by Alan Langford and originally published in 1986 by Puffin Books. It was later republished by Wizard Books in 2002. It forms part of Jackson and Ian Livingstone's fictional Fighting Fantasy series, and is the last Fighting Fantasy gamebook written by Jackson. It is the 24th in the series in the original Puffin series (ISBN 0-14-032040-7) and 4th in the modern Wizard series (ISBN 1-84046-391-0).