Catherine II, also Catherine of Valois or Catherine of Taranto (before 15 April 1303 – October 1346), was the recognised Latin Empress of Constantinople from 1307–1346, although she lived in exile and only had authority over Crusader States in Greece.
She was Princess consort of Achaea and Taranto, and also regent of Achaea from 1332–1341, and Governor of Cephalonia from 1341–1346.