The Book of Revelation – also called the Apocalypse of John, Revelation to John or Revelation from Jesus Christ – is the final book of the New Testament, and consequently is also the final book of the Christian Bible. Its title is derived from the first word of the Koine Greek text: apokalypsis, meaning "unveiling" or "revelation". The Book of Revelation is the only apocalyptic book in the New Testament canon. Thus, it occupies a central place in Christian eschatology.

The book spans three literary genres: the epistolary, the apocalyptic, and the prophetic. It begins with John, on the island of Patmos in the Aegean Sea, addressing a letter to the "Seven Churches of Asia". He then describes a series of prophetic visions, including figures such as the Seven-Headed Dragon, the Serpent, and the Beast, which culminate in the Second Coming of Jesus.