Thoth Tarot is an esoteric tarot deck painted by Lady Frieda Harris according to instructions from Aleister Crowley. Crowley referred to this deck as The Book of Thoth, and also wrote a 1944 book of that title intended for use with the deck.

Tarot card reading is a form of cartomancy whereby practitioners use tarot cards to purportedly gain insight into the past, present or future. They formulate a question, then draw cards to interpret them for this end. A traditional tarot deck consists of 78 cards, which can be split into two groups, the Major Arcana and Minor Arcana. French-suited playing cards can also be used; as can any card system with suits assigned to identifiable elements.