John McCrea is a comic book artist best known for his collaborations with writer Garth Ennis.

Herogasm is a six-issue comic book limited series by Garth Ennis, John McCrea and Keith Burns. Originally published as a spin-off of The Boys, set between issues #30 and #31, and centering on the Boys as they infiltrate "Herogasm", an annual party for Vought-American-sponsored superheroes to allow them "vacations", Herogasm was collected in trade paperback in November 2009 as the fifth volume of The Boys, as The Boys: Herogasm.