Ariloo Marilou York is a behind-the-scenes powerhouse, a former dental hygienist turned CFO of her husband Mark Hamill’s companies, widely admired for a nearly five-decade marriage grounded in stability, support, and partnership.
Early Life & Education
Marilou York was born on February 11, 1955, in Carmi, Illinois. She excelled academically; she was valedictorian and a high school majorette.
She pursued dental hygiene at Parkland College before relocating to Westwood, California, where she worked as a dental hygienist.
It was in this role that she crossed paths with a then relatively unknown Mark Hamill, setting the stage for a lifelong partnership.
Marilou York’s Career
Marilou York’s public journey began modestly as a dental hygienist, but following her marriage to Mark Hamill in 1978, her role subtly, but significantly, evolved.
While maintaining a low-profile lifestyle, she later transitioned into the corporate world, taking on a leadership role behind the scenes.
By 2014, Marilou York had stepped into the position of Chief Financial Officer (CFO) for Hamill’s businesses, Amazing Invisible Inc. and Hamjamill Inc.
Her responsibilities spanned overseeing finances, operations, and strategic direction, tasks Mark Hamill has openly credited her for managing adeptly. “My wife runs everything… in terms of the bills and all the details of everyday living, I’d be lost without her,” he shared in 2025.
Beyond her executive role, Marilou practices thoughtful discretion, rarely involved in Hollywood’s social circuits. As she told People, “We don’t live in town, so we don’t go in and do all the party circuits,” preferring family over fame.
She also contributes intellectually and administratively through her position on the Board of Directors at the University of Southern California, further illustrating her commitment to leadership and service.
Despite her professional contributions, Marilou has maintained a remarkably grounded presence. Their three children, Nathan (born 1979), Griffin (1983), and Chelsea (1988), have even made cameo appearances in Star Wars: The Last Jedi (2017), underscoring the family’s personal harmony and playful spirit.
What emerges is a portrait of a woman who blends pragmatism with quiet leadership, managing both household and financial operations while deliberately steering clear of the celebrity sheen that comes with being married to a movie icon.
Personal Life
Marilou York and Mark Hamill tied the knot in December 1978 after meeting in the mid-’70s at the dental office where she worked. Their marriage now spans nearly half a century, a testament to mutual respect and emotional steadiness.
Marilou, once a dental hygienist, is credited by her husband as the one who “runs everything.” The couple is proud pet parents to rescue dogs and enjoys a family-focused, low-key life in Malibu—one that favors authenticity and togetherness over public fanfare.
Net Worth
Estimates place Marilou York’s personal net worth at approximately $5 million, reflecting her decades-long career progression, from dental hygienist to CFO of Hamill’s enterprises, as well as their shared family assets.
In contrast, Mark Hamill’s net worth stands higher, estimated to be over $18 million, though details of joint versus individual holdings remain private.
