William A. Hill (1864 – March 10, 1932) was an associate justice of the Colorado Supreme Court from 1909 to 1918.

He was born in Farmington, Illinois, his birth date variously reported as being on November 4[1] or December 19, 1864.

[2] His parents were Amanda (Martin) and Abner K. Hill, a hotelier in Fort Morgan, Colorado.

[2] He married Elizabeth "Lizzie" Hunter[1][2] in May 1890 at Banner, Illinois[1] or on June 26, 1890 at York, Nebraska.

[3] He died of a heart attack in Santa Monica, California on March 10, 1932[3] and is buried at Forest Lawn Memorial Park in Glendale.