William Oldham

• William Oldham, English international rugby union player
• William Kavanaugh Oldham, acting Democratic governor of the U.S. state of Arkansas, 1913
• William Fitzjames Oldham, Indian-born British-American bishop and missionary
• William Simpson Oldham, Sr., politician in the Confederate States of America during the American Civil War
• William Oldham , American Revolutionary War soldier and namesake of Oldham County, Kentucky
• Will Oldham, American singer, songwriter, and actor