Allan Heinberg (born June 29, 1967) is an American film screenwriter, television writer, producer, and comic book writer.

Heinberg is the screenwriter of the 2017 film Wonder Woman, directed by Patty Jenkins. His television writing and producing credits include The Naked Truth, Party of Five, Sex and the City, Gilmore Girls, The O.C., Grey's Anatomy, Looking, and Scandal. Most recently, Heinberg developed, wrote, and ran ABC's The Catch, starring Mireille Enos and Peter Krause, and also developed the 2022 Netflix series on The Sandman.

For Marvel Comics, Heinberg co-created and wrote Young Avengers and its sequel, Avengers: The Children’s Crusade, with co-creator/artist Jim Cheung. As part of this series, he co-created the Marvel characters Kate Bishop, Hulkling, Iron Lad, Patriot (Eli Bradley), Speed, and Wiccan. For DC Comics, Heinberg co-wrote JLA: Crisis of Conscience with Geoff Johns (art by Chris Batista) and relaunched Wonder Woman with artists Terry and Rachel Dodson.

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