Tandag National Science High School

Tandag, officially the City of Tandag (Tandaganon/Surigaonon: Siyudad nan Tandag; Cebuano: Dakbayan sa Tandag; Filipino: Lungsod ng Tandag), is a component city and capital of the province of Surigao del Sur, Philippines. According to the 2020 census, it has a population of 62,669 people.

Farming and fishing are the main economic activity for most of the people in Tandag. The chief farm products are rice, corn, and coconut. Livestock- and poultry-raising are also important sources of income. Tandag has a national secondary airport and a seaport.

Tandag has a land area of 291.73 square kilometers or 112.64 square miles. This constitutes 5.91% of the land area of Surigao del Sur. The population density of the city is at 193 inhabitants per square kilometer or 500 inhabitants per square mile.