Pinabacdao, officially the Municipality of Pinabacdao (Waray-Waray: Bungtó han Pinabácdao; Cebuano: Lungsod sa Pinabacdao; Filipino: Bayan ng Pinabacdao) is a fourth class municipality in the province of Samar, Philippines. According to the 2010 census, it has a population of 16,208.It lies at the southwest central coast of Samar Island and crossed along by the Pan-Philippine Highway.