Peter David Lebling (born October 30, 1949) is an American interactive fiction game designer (implementor) and programmer who has worked at various companies, including Infocom and Avid.

After encountering the original Adventure game (also called Colossal Cave), he was fascinated by the concept and—together with Marc Blank, Tim Anderson and Bruce Daniels—set out to write an adventure game with a better parser,[1] which became Zork.

[2] His games include Zork I, II and III, Starcross, Suspect, Spellbreaker, The Lurking Horror, Maze and James Clavell's Shōgun.

After Infocom's end in 1989, Lebling worked on a GUI spreadsheet program, joined Avid (a company doing special effects for broadcast and film), and designed server applications at Ucentric.

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