Oriental Mindoro (Filipino: Silangang Mindoro) is a province of the Philippines located in the MIMAROPA region in Luzon. Its capital is Calapan City and occupies the eastern half of the island of Mindoro; Occidental Mindoro is at the western half. On the east of the province lies the Sibuyan Sea and Romblon. To the north is Batangas across the Verde Island Passage. The Semirara Islands of Antique are to the south.

Oriental Mindoro is famous among tourists for Puerto Galera. This municipality, only a few hours from Manila, boasts of splendid white beach resorts and diving spots. For the adventurous, Mt. Halcon, on the western border of the province provides one of the most challenging mountain climbing experiences in the Philippines.