Dionysius the Younger or Dionysius II (ca. 397 BC – 343 BC) ruled Syracuse, Sicily from 367 BC to 357 BC and again from 346 BC to 344 BC. He was the son of Dionysius the Elder.
Dionysius the Younger, fl. 368–344 B.C., tyrant of Syracuse, son of Dionysius the Elder. He ended the war with Carthage and enlisted the support of the professional army.