Cynthiana may refer to: Cynthiana, Kentucky, a city in Harrison County, Kentucky, United States the Cynthiana meteorite of 1877, which fell in Kentucky, United States (see meteorite falls) Cynthiana, Indiana, a town in Posey County, Indiana, United States Cynthiana, Ohio, a town in Pike County, Ohio, United States Norton (grape), also known as the Cynthiana grape.