The Grimoire of Armadel (original title: Liber Armadel seu totius cabalae perfectissima brevissima et infallabilis scientia tam speculativa quam practiqua) is a 17th-century French grimoire kept in the Bibliothèque de l’Arsenal. It was translated into English by S.L. MacGregor Mathers and circulated in manuscript form amongst members of the Hermetic Order of the Golden Dawn.

Written in the 17th century, this grimoire contains detailed descriptions of the natures and offices of various evil spirits. The sigils - seals supposedly giving power over demons - appropriate to the spirits are reproduced together with their practical uses, according to the particular aspect of the astral world which the reader wants to investigate. The many spells covered are accompanied by diagrams and conjuring tables following the method used in the original French.