Jonathan Fass is an American film producer and is the Head of Development of Film at Bad Feeling. Fass is known for producing the horror short film Laura Hasn't Slept (2020) and Smile 2 (2024).

Fass held roles at Relativity Media where he worked his way from the mailroom to a variety of film development assistant jobs, and 20th Century Fox where he provided creative and administrative support to key executives. While his career has centered on Los Angeles, Fass grew up in a small, rural town in Pennsylvania. Fass also holds a degree in Economics and Film from Hamilton College.