Tia Lessin is an American documentary filmmaker. Lessin has produced and directed documentaries and earned an Academy Award nomination for Best Documentary and the Sundance Grand Jury Prize for Documentary. She co-directed the film which had its premiere at the 2022 Sundance Film Festival and is the director and producer, with Carl Deal, of Trouble the Water and Citizen Koch. She directed and produced several of Michael Moore's films including Fahrenheit 9/11, Where to Invade Next and Fahrenheit 11/9.