James David Hudnall (born April 10, 1957 in Santa Rosa, California) is an American writer who began his career in the comic book field in 1986 with the series Espers, published by Eclipse Comics. He later worked for Marvel and DC on such titles as Alpha Flight, Strikeforce: Morituri, and his own creation Interface, which was a sequel to Espers. He also wrote graphic novels such as Lex Luthor: The Unauthorized Biography, Sinking, Streets and The Psycho.
His series Harsh Realm was adapted to television by X-Files producer Chris Carter in 1998. Hudnall and co-creator Andrew Paquette sued Carter and Fox Television when they failed to give them credits on the show. The suit was later settled and as part of the settlement Hudnall and Paquette received credit in the opening titles of the show.
Hudnall's other works includes: The Age of Heroes, Aftermath, Shut Up And Die, Two to the Chest, Chiller, Devastator, Hardcase and The Solution. He writes a libertarian leaning blog under the Pajamas Media group, a network of political blogs.