Heidi Ewing is a director, producer, and writer of documentary films. She and Rachel Grady founded Loki Films in 2001, and have collaborated on several documentaries together. Detropia won two awards, Outstanding Direction and Outstanding Original Score, at the 2013 Cinema Eye Honors for Nonfiction Filmmaking.

Ewing is a native of Farmington Hills, Michigan, and is a graduate of Mercy High School and the Georgetown School of Foreign Service.