Ari Handel (born in Zürich, Switzerland) is an American neuroscientist, film producer, and writer. He is known for co-writing the films Noah and The Fountain with his Harvard Dunster House suitemate Darren Aronofsky and for helping to produce these films along with two other Darren Aronofsky films, The Wrestler and Black Swan. He started co-writing the film Noah around 2003.
Handel grew up in a Jewish family in Newton, Massachusetts. He was born in Zürich, Switzerland, while his father was studying abroad, but he only lived there for about a year. Handel also did an internship for Nova at WGBH, the Boston PBS station. He has a PhD in neurobiology from New York University. Torn between science writing and science education, he eventually became a film writer in an attempt to become a better communicator of science, although he soon learned that filmmaking is largely an illusion.