Diane Marie Hathaway (born February 1954) is a former Justice of the Michigan Supreme Court. Hathaway, a Democrat, was elected on November 4, 2008 to an 8-year term which commenced in January, 2009. Hathaway retired from the court effective January 21, 2013, after being charged with felony criminal mortgage fraud, to which Hathaway pleaded guilty on January 29, 2013.