Jason Carl is a game designer who has worked on a number of roleplaying games, including the Dungeons & Dragons fantasy roleplaying game.
Jason Carl recalls his introduction to role-playing games: "Some junior high buddies back in my home state of Maine first introduced me to roleplaying in 1980... we played Keep on the Borderlands. From that moment on, I was totally and irreversibly hooked." Years later, be began doing freelance design for White Wolf and Dungeon magazine. After working as the Policy Director for Organized Play for the Magic: The Gathering game, Carl became a member of the Wizards of the Coast R&D team, designing adventures and modules for the Dungeons & Dragons game: "Both careers have their rewards... but I've wanted to be involved in RPG design since I was fourteen - after all, I still remember rolling my first d20. So I couldn't pass up the opportunity to make the switch." When the D&D third edition was released, Carl was the designer chosen to begin the process of adding detail to the character classes in the supplement Sword and Fist; he felt that this book "is important because it establishes the model for those that will follow it".
Jason Carl has worked for White Wolf, TSR and Wizards of the Coast, Kenzer & Company, and Exile Game Studio. Among his D&D credits are design work for the 3rd edition's core books: the Player's Handbook, Monster Manual, and Dungeon Master's Guide (2000). He also designed the Forgotten Realms adventure The Dungeon of Death (2000).