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.

As an executive producer, Livanos continued to oversee major Marvel Studios releases, including the feature film The Marvels, and the television miniseries Agatha All Along and VisionQuest.

Earlier in her career, Livanos wrote, directed, edited, and produced the 2013 short film Commitment Issues.