William Kemp (born 29 June 1977) is a British actor and dancer.

Kemp was born in Hertfordshire, England, the son of Rosi, a former model, and Barry Kemp, a graphic designer. He has been dancing since he was nine, with the encouragement of his mother. Trained at the Royal Ballet School, at age 17 he was accepted at dance company, Adventures in Motion Pictures (AMP). His most prestigious ballet accomplishment thus far was winning the lead role of The Swan in the all male cast of Swan Lake from 1997 to 2000 in both London and Broadway. In 2002 he could be seen dancing to Stuff Like That in a Peter Lindbergh-directed commercial for Gap's "For Every Generation" campaign and in 2004 he appeared alongside Sarah Jessica Parker in two Francis Lawrence-directed spots, "Color" and "Shine", for Gap's "How Do You Share It" campaign. He famously turned down a lucrative modelling contract with Giorgio Armani citing not wanting to be confused as a model as opposed to an actor as the reason for his decision.

Kemp made his acting debut in 2004's Van Helsing, opposite Hugh Jackman and Kate Beckinsale. He played the horse Nugget as well as The Young Horseman in the 2007 West end revival of Equus starring Daniel Radcliffe. The part of Nugget required him to don a wire horse mask and metal hooves/horseshoes, and carry Daniel Radcliffe on his back whilst galloping. He had a role in Step Up 2 The Streets.

Kemp and his wife, Gaby Jamieson, have a daughter named Thali.

Will Kemp comes from an English family, including one brother and one sister. His father is a graphic designer and his mother is a former model. At age 9, Will's mother suggested that he take up a new hobby and attend dance classes. Dancing turned out to be his God-given talent! Eventually, hard work with Elizabeth Harrison FISTD earned Will a place into the Royal Ballet Seniors and later the Royal Ballet Upper Class. Finally, at age 17, Will auditioned for Matthew Bourne's impressive dance company, Adventures in Motion Pictures (AMP), and was accepted. Will then was cast for the original showing of Swan Lake, working his way up to the lead role of the Swan. During a performance as the Swan, Will was spotted by Paramount Studio head, Sherry Lansing - immediately, she "was so smitten by his performance" that she dubbed him the "James Dean of Ballet". Matthew Bourne continued to involve Will in his works, including Cinderella, Spitfire, The Car Man, and Play Without Words. In fact, as the lead role of the Pilot in Cinderella, he was nominated for a Los Angeles Critics Drama Award for Outstanding Featured Performer. In 2002, Will became a sensational hit when shakin' his booty in a GAP campaign for loose-fitted jeans "For Every Generation". In 2004, Will made his big screen debut in 'Stephen Sommer''s monster thriller, Van Helsing (2004), as the Werewolf. Up next is Renny Harlin's Mindhunters (2004), where Will plays an FBI trainee trying to solve a mock crime. As we look forward to seeing Will on the silver screen, he still pursues his dancing career onstage in England, managing both dancing and acting.