Warlock is a fictional character, a cybernetic alien superhero in the Marvel Comics universe, affiliated with the original New Mutants, a mutant superhero team. He was created by writer Chris Claremont and artist Bill Sienkewicz, and first appeared in New Mutants #21 (November 1984).

Warlocks are fictional characters on The WB television series Charmed.

The warlock is one of the non-core character classes in the Dungeons & Dragons role-playing game. It was introduced in the supplemental book Complete Arcane for the 3.5 edition of Dungeons & Dragons.

Warlock is an original novel written by Andrew Cartmel and based on the long-running British science fiction television series Doctor Who. It features the Seventh Doctor, Ace and Bernice. The book is the middle novel in the "War trilogy", following on from Cat's Cradle: Warhead and concluding in Warchild.

Warlock was a magazine published by Penguin Books and the British game manufacturer Games Workshop between 1983 and 1986. Originally dedicated to the Fighting Fantasy gamebook series, the magazine rapidly developed a wider focus on the fantasy gaming genre.