William Kenneth Davidson (June 30, 1904 – March 4, 1974) was an American restaurateur and Illinois politician.
Davidson went to Bradley University and then worked as a salesman in Illinois and Iowa.
In 1931, he started Davidson's Restaurant in Kewanee, Illinois.
Davidson served on the Kewanee City Council and was a Republican.
Davidson died from a heart attack in a hospital in Aransas Pass, Texas, while on vacation with his wife.