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. 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.

Eastern Visayas is an administrative region in the Philippines, designated as Region VIII. It consists of three main islands, Samar, Leyte and Biliran. The region has six provinces, one independent city and one highly urbanized city namely, Biliran, Leyte, Northern Samar, Samar, Eastern Samar, Southern Leyte, Ormoc and Tacloban. The highly urbanized city of Tacloban is the sole regional center. These provinces and cities occupy the easternmost islands of the Visayas group of islands.