Nathan Greno (born March 22, 1975) is an American film director, story artist, and writer best known as the co-director of Walt Disney Animation Studios' film, Tangled (2010). Inspired by Disney films since the first grade, Greno started as a young boy writing and drawing comic books and strips.

In 1996, during his junior year at Columbus College of Art and Design, he was hired by Walt Disney Feature Animation. He started there as an animation clean-up artist on Mulan (1998). Being creatively unfulfilled, he switched to story development.