Barbara Blair Cox Anthony (December 8, 1922 – May 28, 2007) was the youngest daughter of James M. Cox, a Democratic governor of Ohio, newspaper publisher and broadcaster. With her sister Anne Cox Chambers and brother James M. Cox, Jr., she inherited, via a trust, ownership and control of her father's company, now called Cox Enterprises. Upon her brother's death in 1974, the sisters received his share of the company equally.
Her net worth was estimated at $12 billion, based principally on her equity interest in Cox Enterprises which made her one of the richest women in the United States and the richest resident of Hawaii.