Mary Livanos is an executive of production and development at Marvel Studios. She began her career at the studio in 2012 as a research and development intern and has progressed through a range of production and development roles, contributing to both film and television projects across the Marvel Cinematic Universe. Before joining Marvel Studios, she worked as an assistant and worked as a motion picture and literary talent intern at William Morris Endeavor.

Within Marvel Studios, Livanos has been involved in the development and production of numerous high-profile projects, including Guardians of the Galaxy Vol. 2, Captain Marvel, Hawkeye, Black Panther: Wakanda Forever, and Daredevil: Born Again. She transitioned into senior producing roles with Marvel Studios' expansion into serialized storytelling, serving as co-executive producer on Marvel Studios's first television production, WandaVision.