Marc Andreyko is a comic book and screenplay writer, known for writing the 2000s ongoing series Manhunter for DC Comics. He co-created (with artist Jesus Saiz) Kate Spencer, the title character of the series, the first female character to carry the long-running legacy.

Andreyko co-wrote the graphic novel Torso with Brian Michael Bendis, for which he was nominated for the Angoulame International Comics Festival Prize Awarded by the Audience and the Prize for Scenario (script).

He co-created, with P. Craig Russell, an Eisner: and Harvey-winning one-shot for Marvel Comics featuring Dr. Strange entitled What Is It That Disturbs You, Stephen? He has written comics for other publishers, including Dark Horse Comics, IDW Publishing, and Todd McFarlane Productions/Image Comics.