John Kane Ditto (born May 18, 1944) is an American politician and formerly the mayor of Jackson, Mississippi. He was born in Bowling Green, Kentucky. Ditto, a Democrat, served as Mayor of the City of Jackson from July 3, 1989 until July 1997. Ditto was previously elected to the Mississippi House of Representatives from District 66, where he served from 1987 to 1989. Before entering the political arena, Ditto practiced law for 18 years with Watkins Ludlam Winter & Stennis in Jackson. For five years he was managing partner of the firm. As a practicing attorney, his practice developed a heavy emphasis in municipal finance.