The Morean War is a campaign fought during the Great Turkish War between the Republic of Venice and the Ottoman Empire in the Peloponnese (Morea) and the Aegean Sea between 1684-1699 (in effect, together with Venetian operations in Dalmatia, it comprises the seventh Turkish-Venetian War).

The war, Venice's last major expansionist campaign, is ended by the Treaty of Karlowitz, whereby the Morea and parts of Dalmatia are ceded to Venice.