Book of Thoth is a name given to many ancient Egyptian texts supposed to have been written by Thoth, the Egyptian god of writing and knowledge. They include a text that is known and has been translated, many texts that were claimed to exist by ancient authors, the emerald tablets of Thoth, and a magical book that appears in an Egyptian work of fiction.

The Egyptians stored many texts, on a wide range of subjects, in “Houses of Life”, the libraries contained within temple complexes. As Thoth was the god of knowledge, many of these texts were claimed to be his work. The Egyptian historian Manetho said that Thoth wrote 36,525 books.