Samuel Sloan may refer to:

Samuel Howard Sloan (born September 7, 1944), also known as Haji Mohammed Ismail Sloan, is an American chess player and publisher. In 2006, Sloan served on the Executive Board of the United States Chess Federation. In 1970, Sloan established a registered broker-dealer that traded over-the-counter stocks and bonds. Sloan had no formal legal training but orally argued a case before the Supreme Court after litigating against the Securities and Exchange Commission over policies regarding the trading of penny stocks. The Court ruled in his favor, 9–0, concerning his claim that the "tacking" of 10-day summary suspension orders for an indefinite period was an abuse of the agency's authority and a deprivation of due process. In 2010, Sloan made an unsuccessful bid for the Libertarian Party (LP) nomination in the 2010 New York gubernatorial election. He also made an unsuccessful bid for the Libertarian nomination for President of the United States in the 2012 election.

Sloan was born in Richmond, Virginia in 1944 to attorney Leroy Bayfield Sloan and doctor Marjorie Jacobson Sloan. His family later moved to Lynchburg, and attended E.C. Glass High School. Sloan studied chess from an early age, and dropped out of the University of California, Berkeley, majoring in mathematics, but not earning a degree.