The City of Borongan is a component city and the provincial capital of the province of Eastern Samar, Philippines. It is bounded on the north by the municipality of San Julian, in the south by the municipality of Maydolong, in the west by the Samar municipalities of Hinabangan, Calbiga, Pinabacdao and Basey, and in the east by the Pacific Ocean. Its cityhood was settled by the Supreme Court of the Philippines when it decided with finality on April 12, 2011 the constitutionality of its city charter, Republic Act 9394, which conferred upon and elevated the status of the municipality of Borongan into a component city of the province of Eastern Samar.

The City of Borongan is located along the middle coastal part of the province of Eastern Samar. The city proper itself is situated along the northern banks of the Lo-om River and is set back a little distance away from the shoreline of Borongan Bay. The province itself comprises a part of the Eastern Visayas region (Region VIII) of the Republic of the Philippines.