Mark Siegel (born June 2, 1967 in Ann Arbor, Michigan) is known both as an author, illustrator, and as the editorial director of First Second Books, which publishes graphic novels for all ages. His books in print to date are Seadogs, An Epic Ocean Operetta (on a script by children's author Lisa Wheeler), Long Night Moon (on a script by author Cynthia Rylant) and To Dance, A Ballerina's Graphic Novel (on a script by his wife Siena Cherson Siegel) and Moving House, his first picture book as author and illustrator. Upcoming books include more children's stories, such as Oskar and the Eight Blessings (illustrator). Siegel is the author of the graphic novel for adults Sailor Twain, or the Mermaid in the Hudson (2012), which was serialized online starting in 2010.
Under the banner of First Second Books, located in the Flatiron Building in New York City, Siegel is the editor of works by authors and artists such as Joann Sfar, Eddie Campbell, Paul Pope, Jessica Abel and Lewis Trondheim, Jane Yolen, and Adam Rapp.
In 2006, First Second published American Born Chinese by Gene Luen Yang, the first graphic novel ever nominated for a National Book Award, and the first ever to win the American Library Association's Edward L. Printz Award.