Fiend Folio (disambiguation)

Fiend Folio might refer to:
 * Fiend Folio 1st edition (1981), a 1st-edition sourcebook
 * Monstrous Compendium Fiend Folio Appendix (1992), a 2nd-edition sourcebook
 * Fiend Folio 3rd edition (2003), a 3rd-edition sourcebook