Isis Unveiled

Isis Unveiled: A Master-Key to the Mysteries of Ancient and Modern Science and Theology
First edition titlepage
AuthorHelena Petrovna Blavatsky
LanguageEnglish
SubjectEsoteric philosophy
GenreNon-fiction
Published1877
PublisherTheosophical Society
Publication placeUnited States
Media typePrint

Isis Unveiled: A Master-Key to the Mysteries of Ancient and Modern Science and Theology, published in 1877, is a book of esoteric philosophy and Helena Petrovna Blavatsky's first major self-published major work text and a key doctrine in her self-founded Theosophical movement.

The work has often been criticized as a plagiarized occult work, with scholars noting how Blavatsky extensively copied from many sources popular among occultists at the time. Isis Unveiled is nevertheless also understood by modern scholars to be a milestone in the history of Western esotericism.