The Book of Thoth: A Short Essay on the Tarot of the Egyptians is the title of The Equinox, volume III, number 5, by English author and occultist Aleister Crowley.

The publication date is recorded as the vernal equinox of 1944 (an Ixviii Sol in 0° 0' 0" Aries, March 21, 1944 e. v. 5:29 p.m.) and was originally published in an edition limited to 200 numbered and signed copies.

The original signed limited edition was bound in Moroccan leather and printed on pre-wartime paper.

The book includes a list of plates depicting the Tarot cards as seen by Crowley and Harris.

Appendix B also includes the Key Scale of the Tree of Life with the conic sections of mathematics and a diagram attributing the trigrams of the I Ching to the ten Sephirot.