Tommy Wallach is an American author, musician, screenwriter, and game designer, born in 1982. Wallach is best known for his YA novel We All Looked Up, which spent over six months on the New York Times bestseller list. He is also the co-creator of Unspeakable: The Murder of JonBenet Ramsey, starring Melissa McCarthy and Clive Owen, forthcoming on Paramount+.

Wallach co-owns Hatch Escapes, an immersive experience and gaming company based in Los Angeles, which created The Ladder, winner of a 2025 THEA alongside The Sphere in Las Vegas, Tokyo DisneySea, and the Paris Olympics Opening Ceremony. He was also placed on the 2025 XLIST, recognizing innovators in experiential design.

In 2008, Wallach was signed to Decca Records, who released his self-titled EP. He has released two full-length albums independently, and has performed in venues such as the Guggenheim Museum and Joe's Pub. His original musical Vicky & Frank, loosely based on Mary Shelley's Frankenstein, is currently in development for Broadway by 8-time Tony-Award-winning producer Joey Parnes.