Arthur Thornton LaPrade[1] (March 3, 1895 – June 30, 1957) was a justice of the Supreme Court of Arizona from January 1, 1945, until his death in 1957.

Between 1933 and 1935 he was Arizona Attorney General and oversaw the conviction and sentence of Winnie Ruth Judd.

[2] From 1939 to 1945 LaPrade served as a Superior Court Judge.

LaPrade married Lucile "Lucy" Hooper (1892–1983) and had four children, two of them went on to become attorneys.

After his death on June 30, 1957, in Phoenix,[3] LaPrade was buried in the Greenwood Memory Lawn Cemetery.