| Name | Dates of Birth-Death | Wealthiest | Associated State | Areas of Business |
| a href="/encyclopedia/John-Jacob-Astor" title="John Jacob Astor">John Jacob Astor | July 17, 1763 - March 29, 1848 | ? | New York | Fur trading, Real Estate |
| a href="/encyclopedia/William-Backhouse-Astor,-Sr." title="William Backhouse Astor, Sr.">William Backhouse Astor, Sr. | September 19, 1792 - November 24, 1875 | ? | New York | Real Estate |
| a href="/encyclopedia/Cornelius-Vanderbilt" title="Cornelius Vanderbilt">Cornelius Vanderbilt | May 27, 1794 January 4, 1877 | ? | New York | Shipping |
| a href="/encyclopedia/William-Henry-Vanderbilt" title="William Henry Vanderbilt">William Henry Vanderbilt | May 8, 1821 December 8, 1885 | ? | New York | Railways |
| a href="/encyclopedia/John-Davison-Rockefeller" title="John Davison Rockefeller">John Davison Rockefeller | July 8, 1839 May 23, 1937 | ? | New York | Petroleum |
| a href="/encyclopedia/Howard-Hughes" title="Howard Hughes">Howard Hughes | December 24, 1905 April 5, 1976 | ? | born in Texas | Aircraft, Movie Production |
| a href="/encyclopedia/Sam-Walton" title="Sam Walton">Sam Walton | 1918 - 1992 | 1985-1988 (Forbes 400) | Arkansas | Wal-Mart |
| a href="/encyclopedia/John-Kluge" title="John Kluge">John Kluge | 1914 - | 1989 (Forbes 400) | Germany | Wal-Mart |
| a href="/encyclopedia/Warren-Buffett" title="Warren Buffett">Warren Buffett | August 30, 1930 - living | ? | Omaha, Nebraska | Investments - Berkshire Hathaway |
| a href="/encyclopedia/Bill-Gates" title="Bill Gates">Bill Gates | October 28, 1955 - living | 1996-2005 (Forbes 400) | Seattle,Washington | Computer Software - Microsoft corporation |