David "Zeb" Cook is an American game designer, best known for his work at TSR, Inc., where he was employed for over fifteen years.

[1] Cook became a high school teacher in Milligan, Nebraska, where his students gave him his nickname of "Zeb".

Other notable works for TSR include the role-playing games Conan the Barbarian, Crimefighters,[3] The Adventures of Indiana Jones, Star Frontiers, Sirocco, and Escape from New York.

[2]: 11  Cook was the primary author of the original Oriental Adventures,[2]: 17  ostensibly under the guidance and direction of Gary Gygax,[1] which among other things introduced the concept of non-weapon proficiencies into AD&D,[4] and he designed the far eastern setting, Kara-Tur.

[5] Cook, with Jim Ward, Steve Winter, and Mike Breault, co-wrote the adventure scenario that was adapted into the game Pool of Radiance.

[6] Cook was the lead designer on the 2nd edition of Advanced Dungeons & Dragons role-playing game.

[2]: 153 [7] After he left Cryptic, he joined Cheyenne Mountain Entertainment as the lead systems designer for the video game Stargate Worlds.

[12] With the release of the Elsweyr expansion for the game in June 2019, Cook was credited as a Senior Product Owner for Bethesda.Net.