This is a SMALL list of America's richest African Americans, it in no way includes ALL of America's richest African Americans:
1. Oprah Winfrey
Net worth: $2.7 billion as of March 2012 Source of Wealth: Television, self-made
2. Sean “Diddy” Combs
Net Worth: $550 million as of April 2012 Source of Wealth: Rap, record production, acting, fashion design, other businesses
3. Robert Johnson
Estimated net worth: $550 million as of May 2009 Source of Wealth: BET, investments
4. Tiger Woods (tie)
Net worth: $500 million as of September 2010 Source of Wealth: Golf, endorsements
4. Michael Jordan (tie)
Net worth: $500 million as of September 2010 Source of Wealth: Basketball, Nike, endorsements
4. Earvin “Magic” Johnson Jr. (tie)
Net worth: $500 million as May 2009 Source of Wealth: Restaurants, real estate, investments
7. Shawn “Jay-Z” Carter
Net Worth: $460 million as of April 2012 Source of Wealth: Rap, songwriting, co-owner of the New Jersey Nets, other businesses
8. William Henry “Bill” Cosby Jr.
Net worth: $450 million as of May 2009 Source of Wealth: The Cosby Show, other entertainment
Tyler Perry
Net worth: $350 million As of September 2010
R. Donahue Peebles
Net worth: $350 million As of May 2009
Quintin Primo III
Net worth: $300 million As of May 2009 Source of Wealth:Real estate
Beyoncé Knowles
Net worth: $300 million As of December 2010
Don King
Net worth: $280 million As May 2009
Andre “Dr. Dre” Young
Net Worth: 
$260 million – As of April 2012
Janice Bryant Howroyd & family
Net worth: $250 million As of May 2009
Herman J. Russell
Net worth: $200 million As of May 2009
Ulysses Bridgeman, Jr.
Net worth: $200 million As May 2009