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Billionaire Profile
Katharine Rayner
Global Rank
#581

Image: Michael N Weedon, Mark I McCarthy, Graham Hitman, Mark Walker,Christopher J Groves, Eleftheria Zeggini,N. William Rayner, Beverley Shields,Katharine R Owen, Andrew T Hattersley, Timothy M Frayling | CC BY 2.5 | via Wikimedia Commons

Katharine Rayner

CEO, Media
UNITED STATES
Real-Time Net Worth
$6.835B
Estimated based on Media stock value as of March 6, 2026
0% (24h)
Age
81
Source
Media, automotive
Industry
Media & Entertainment
Citizenship
UNITED STATES

Biography

Katharine Rayner is an American billionaire heiress, recognized for her substantial wealth derived primarily from her stake in Cox Enterprises, a media and automotive conglomerate. Her current net worth is estimated at $6.6 billion. She has built her fortune through inheritance and has made significant contributions to philanthropy while maintaining a relatively private public profile. Her career is defined by her role as a member of one of America's most powerful business dynasties.

Fact Checked
Verified by Editorial Team
Live Data
Updated 3/6/2026

Wealth Over Time

In-Depth Profile

Early Life

Katharine Ann Johnson Rayner, born in Atlanta, Georgia, in 1945, is the daughter of Anne Cox Chambers and Louis G. Johnson. Her maternal grandfather, James M. Cox, founded Cox Enterprises, a media and automotive conglomerate.

Rise to Success

Katharine Rayner's wealth originates from her inheritance. In 2015, her mother, Anne Cox Chambers, divided her 49% share in Cox Enterprises equally among her three children. Katharine received a 16.4% stake, significantly increasing her net worth.

Key Business Strategies

Rayner has not taken an active role in the day-to-day operations of Cox Enterprises. However, her stake in the company is a significant source of her wealth.

Philanthropy

Katharine Rayner is known for her philanthropic contributions, particularly to animal welfare. In 2019, she donated over $5 million to the Animal Medical Center in New York City. She also serves on the boards of the New York Public Library and the Morgan Library.

Philanthropy & Social Impact

Animal Welfare

Animal Medical Center Donation

$5B

Donated over $5 million to the Animal Medical Center in New York City in 2019.

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