Davao Oriental (Cebuano: Sidlakang Dabaw; Filipino: Silangang Davao), officially the Province of Davao Oriental (Cebuano: Lalawigan sa Sidlakang Dabaw, Lalawigan sa Davao Oriental; Filipino: Lalawigan ng Silangang Davao, Lalawigan ng Davao Oriental), is a province in the Philippines located in the Davao Region in Mindanao. Its capital is the city of Mati, and it borders the province of Davao de Oro to the west, and Agusan del Sur and Surigao del Sur to the north. The province is the traditional homeland of the Mandaya and Kalagan/Kaagan.