The Second Battle of Cynthiana included three separate engagements during the American Civil War that were fought on June 11 and 12, 1864, in Harrison County, Kentucky, in and near the town of Cynthiana. This was part of Confederate Brigadier General John H. Morgan's 1864 Raid into Kentucky. The battle ultimately resulted in a victory by Union forces over the raiders and ended Morgan's Last Kentucky Raid in defeat.