Samuel Howard Sloan (born September 7, 1944) is an American perennial candidate and former broker-dealer. In 1978, he won a case pro se before the United States Supreme Court, becoming the last non-lawyer to argue a case in front of the court before it prohibited the practice in 2013. In 2006, Sloan served on the executive board of the United States Chess Federation. He has run unsuccessfully or attempted to run for several political offices, including President of the United States.