The magisterium is the teaching authority of the Catholic Church. It may also refer to:
The philosopher's stone, a legendary substance in alchemy
Non-overlapping magisteria, a view on the relationship between religion and science proposed by Stephen Jay Gould Magisterium of Pius XII, a collection of works by Pope Pius XII The Magisterium Series, a fantasy novel series by Holly Black and Cassandra Clare The Magisterium, a fictional religious organization in Philip Pullman's trilogy of fantasy novels His Dark Materials