拔摩岛的约翰（英语：John of Patmos），新约圣经中《启示录》的作者，根据《启示录》记载，他居住在希腊的拔摩岛上。传统上，主要的基督教会都相信他就是十二使徒中的约翰，也就是写作《约翰福音》的福音书作者约翰。但是根据古代文献，现代学者提出他跟约翰有可能是不同的人。

基督教会又称他为圣者约翰（John the Divine）、启示者约翰（John the Revelator）、神学家约翰（John the Theologian）、拔摩岛之鹰（Eagle of Patmos）或先知约翰（John the Seer）。

John of Patmos (also called John the Revelator, John the Divine or John the Theologian; Greek: Ἰωάννης ὁ Θεολόγος) is the name given to the author of the Book of Revelation, the apocalyptic text forming the final chapter of the New Testament. The text of Revelation states that the author is called John and that he lives on the Greek island of Patmos, where, by some, he is considered to be in exile as a result of anti-Christian persecution under the Roman emperor Domitian.