Adam B. Stein is an American film director and screenwriter working in Vancouver, British Columbia and Los Angeles, California.

Stein graduated from Harvard University and the directing program at the USC School of Cinematic Arts. He co-directed Final Destination Bloodlines for New Line Cinema and the Disney live-action movie Kim Possible. He co-wrote and directed the award-winning independent film Freaks, all with his partner, Zach Lipovsky. In 2019, he was nominated for an Emmy award for Outstanding Directing for his work on the TV series Mech-X4.