First Book of Enoch, also called Ethiopic Book of Enoch, pseudepigraphal work (not included in any canon of scripture) whose only complete extant version is an Ethiopic translation of a previous Greek translation made in Palestine from the original Hebrew or Aramaic.

Enoch, the seventh patriarch in the book of Genesis, was the subject of abundant apocryphal literature, especially during the Hellenistic period of Judaism (3rd century BC to 3rd century AD). At first revered only for his piety, he was later believed to be the recipient of secret knowledge from God. This portrait of Enoch as visionary was influenced by the Babylonian tradition of the 7th antediluvian king, Enmenduranna, who was linked to the sun god and received divine revelations. The story of Enoch reflects many such features of the Babylonian myth.