William Keller

William Keller may refer to:


 * William Keller (Medal of Honor) (1876–1963), U.S. Army private and Medal of Honor recipient
 * William Duffy Keller (born 1934), judge
 * William F. Keller (born 1951), Pennsylvania politician
 * Bill Keller (born 1949), executive editor of The New York Times
 * Bill Keller (televangelist), American television evangelist and the host of Live Prayer
 * Billy Keller (born 1947), basketball player