The Legislative Districts of Agusan del Sur are the representations of the province of Agusan del Sur in the various national legislatures of the Philippines. The province is currently represented in the lower house of the Congress of the Philippines through its first and second congressional districts.
Republic Act No. 4979, approved in a plebiscite held simultaneously with the 1967 elections, split the old Agusan Province into Agusan del Norte and Agusan del Sur and provided them each with a congressional representative. In accordance with Section 7 of R.A. 4979, Agusan del Sur first elected its separate representative starting in the 1969 elections.
Under the new Constitution which was proclaimed on February 11, 1987, the province constituted a lone congressional district, and it elected its member to the restored House of Representatives starting that same year.
- City: Bayugan
- Municipalities: Esperanza, Prosperidad, San Luis, Sibagat, Talacogon
- Population (2015): 341,559
|Ma. Valentina G. Plaza-Cornelio|
|Alfelito M. Bascug|
- Municipalities: Bunawan, La Paz, Loreto, Rosario, San Francisco, Santa Josefa, Trento, Veruela
- Population (2015): 359,094
|Evelyn G. Plaza-Mellana|
|Adolph Edward G. Plaza|
Lone District (defunct)
|Democrito O. Plaza Sr.|
|Ceferino S. Paredes, Jr.|
|Alex G. Bascug|
|Rodolfo G. Plaza|
|Regular Batasang Pambansa
|Democrito O. Plaza Sr.|
- Legislative districts of Mindanao and Sulu
- Legislative district of Agusan
- Congress of the Philippines (June 16, 1967). "Republic Act No. 4979 - An Act Creating the Provinces of Agusan del Norte and Agusan del Sur". The LawPhil Project. Retrieved February 4, 2017.
- 1986 Constitutional Commission (February 2, 1987). "1987 Constitution of the Philippines - Apportionment Ordinance". Official Gazette of the Republic of the Philippines. Retrieved November 19, 2017.
- Congress of the Philippines (October 20, 2008). "Republic Act No. 9508 - An Act Providing for the Reapportionment of the Lone Legislative District of the Province of Agusan del Sur". The LawPhil Project. Retrieved February 4, 2017.
- "Population of Population of Legislative Districts by Region, Province, and Selected Highly Urbanized/Component City: 2015". Philippine Statistics Authority. 2015. Retrieved November 18, 2017.
- Congressional Library Bureau. "Roster of Philippine Legislators". Republic of the Philippines, House of Representatives. Retrieved February 7, 2017.