Victoria Mars, a fourth-generation member of the Mars family, is a former chair of Mars Inc. and one of the heirs to the private candy, pet care, and food empire behind M&M’s, Snickers, Pedigree, Whiskas, and Royal Canin. She began working in the family business in France in 1978, later held roles at Mars Electronics and Dove, served as Mars’s first corporate ombudsman, and chaired the company’s board from 2014 to 2017.

Valerie Mars, a fourth-generation member of the Mars family, is an heir to the private candy, pet care, and food fortune behind brands such as M&M’s, Snickers, Pedigree, Whiskas, and Royal Canin. Unlike lower-profile family heirs, she has held senior roles inside Mars Inc., including leadership positions in corporate development and governance, giving her profile both ownership and operating depth within one of America’s largest family-controlled companies.

Marijke Mars, great-granddaughter of Mars Inc. founder Frank C. Mars, is an heir to one of America’s largest private fortunes. Her wealth comes from the family-owned candy, pet care, and food giant behind brands such as M&M’s, Snickers, Pedigree, Whiskas, and Royal Canin. Unlike some members of the Mars family, she keeps a very low public profile, with her influence tied primarily to ownership in the privately held company.

Milane Frantz, daughter of Enterprise Products cofounder Dan Duncan, is one of the heirs to the Duncan family energy fortune. Her wealth is tied to Enterprise Products Partners, one of America’s largest pipeline and midstream energy companies, which remains under significant family ownership. Based in Houston and known for a very low public profile, Frantz represents the quieter side of one of Texas’s most valuable energy dynasties.

Randa Duncan Williams, non-executive chairman of Enterprise Products Partners, is the most publicly active heir to the energy fortune built by her father, Dan Duncan. Enterprise Products, founded in 1968, became one of America’s largest pipeline and midstream energy companies, with the Duncan family retaining major ownership. Williams, the only one of Dan Duncan’s four children with an active role in the business, also owns Texas Monthly and remains a prominent figure in Houston business and philanthropy.

Pat Stryker, granddaughter of Stryker Corporation founder Homer Stryker, inherited part of the family medical-device fortune and became one of Colorado’s most prominent billionaire philanthropists. She founded the Bohemian Foundation in 2001, focusing on music, arts, community programs, and civic causes, while keeping a relatively low public profile. Her influence is tied less to operating the family company than to philanthropy, political giving, and long-term community investment.

Gay Simplot, daughter of agribusiness legend J.R. Simplot, is a principal owner and influential figure within the J.R. Simplot Company, one of the United States' largest privately held agricultural enterprises. As a key steward of the family’s multi-billion-dollar legacy, she plays a vital role in maintaining the company’s independence and its position as a global leader in food processing, fertilizer production, and livestock. Beyond her business interests, she is deeply involved in philanthropic efforts and community development in Idaho, preserving the Simplot family’s long-standing impact on the region’s economy and culture.

Renata Kellnerova is a prominent Czech businesswoman and philanthropist, widely known as the widow of Petr Kellner, the founder of PPF Group. She has played a significant role in maintaining and expanding the family's business empire following her husband's death, becoming one of the most influential women in the business world.

Charlotte Söderström, a Swedish billionaire heiress and businesswoman, is part of the influential Persson family, known for their ownership of H&M, the global fashion retail giant. Though she maintains a lower public profile compared to her siblings, her contributions to the family business and her involvement in equestrian sports make her a notable figure in the business world.

Susanne Klatten is a German businesswoman and billionaire heiress, known for her significant stakes in BMW and pharmaceutical company Altana. As one of the richest women in the world, Klatten has played a pivotal role in expanding her family's business empire and is renowned for her discreet but powerful presence in the business world.

Elaine Marshall is an American billionaire and board member of Koch Industries. She inherited her wealth through her late husband, E. Pierce Marshall, and has significant stakes in one of the largest privately held companies in the world. She is known for her low-profile yet influential role in the business world.