Henry Joost is an American filmmaker and director, best known for his work in the film and television industry. He gained prominence for co-directing the popular documentary series Catfish and the feature film Catfish (2010), which explores themes of identity and deception in online relationships. Joost has collaborated with Ariel Schulman, and together they have directed several films, including Paranormal Activity 3 and Paranormal Activity 4. Their unique storytelling style often blends elements of horror and reality, making them notable figures in contemporary cinema.