William Leyden (February 1, 1917 in Chicago, Illinois – March 11, 1970 in Hollywood, California) was a television game show host and announcer who emceed six game shows, including It Could Be You (1956–61), Your First Impression (1962–64, with Dennis James), and You're Putting Me On (1969). In addition, he hosted movies on KTTV, and played small roles in a handful of films, including Jerry Lewis's The Patsy (1964).