Keeth Smart (born July 29, 1978) is a U.S. saber fencer. Smart was born in New York City. At the urging of his parents, he began to learn fencing at the Peter Westbrook Foundation, an organization dedicated to directing inner-city youths away from gang activity and into fencing. Westbrook, an Olympic bronze medalist in saber, was his mentor. Smart graduated from St. John's University where he excelled in NCAA fencing. In 2003, he became the first American to be named the top ranked male saber fencer in the world. Smart competed in the 2000 Summer Olympics and the 2004 Summer Olympics but did not medal at either.