Eastern Samar, officially the Province of Eastern Samar, is a province in the Philippines located in the Eastern Visayas region. Its capital is the city of Borongan, which is the most populous. Eastern Samar occupies the eastern portion of the island of Samar. Bordering the province to the north is the province of Northern Samar and to the west is Samar province. To the east lies the Philippine Sea, part of the vast Pacific Ocean, while to the south lies Leyte Gulf.