Source of wealth: BET, investments
Residence: The Plains, Va.
Age: 60
Doctor's daughter and violinist co-founded Black Entertainment Television with former husband Robert Johnson; couple met in college at University of Illinois. Duo sold network to Viacom for $3 billion in stock and assumed debt; split fortune in divorce in 2002 after 33-year marriage. Today she is chief executive of Salamander LLC, which controls a portfolio of luxury resorts. Through investment in Lincoln Holdings, owns stake in NHL's Washington Capitals, NBA's Washington Wizards, and WNBA's Washington Mystics. Johnson is the Mystics' president and managing partner.