Agusan del Sur's at-large congressional district

Agusan del Sur's at-large congressional district is an obsolete congressional district that encompassed the entire province of Agusan del Sur in the Philippines. It was represented in the House of Representatives from 1969 to 1972, in the Regular Batasang Pambansa from 1984 to 1986, and in the restored House of Representatives from 1987 to 2010. The province of Agusan del Sur was created as a result of the partition of Agusan in 1967 and elected its first representative provincewide at-large during the 1969 Philippine House of Representatives elections. It was a short-lived district for the Third Philippine Republic Congress, having been eliminated following the dissolution of the lower house in 1972. The province was later absorbed by the multi-member Region X's at-large district for the national parliament in 1978. In 1984, provincial and city representations were restored and Agusan del Sur elected a member for the regular parliament. The district was re-established ahead of the 1987 Philippine House of Representatives elections and continued to elect representatives until Agusan del Sur was reapportioned in 2008 and which took effect in 2010.

Representation history
{| class=wikitable ! rowspan="2" | # ! rowspan="2" colspan=2 | Member ! colspan=2 | Term of office ! rowspan="2" | Congress ! rowspan="2" | Party ! rowspan="2" | Electoral history !Start!!End
 * colspan="8" style="text-align:center;" |
 * colspan="8" style="text-align:center;" |

Agusan del Sur's at-large district for the House of Representatives of the Philippines
! rowspan="2" | # ! rowspan="2" colspan=2 | Member ! colspan=2 | Term of office ! rowspan="2" | Batasang Pambansa ! rowspan="2" | Party ! rowspan="2" | Electoral history !Start!!End
 * colspan="8" style="text-align:center;" | District created June 17, 1967 from Agusan's at-large district.
 * style="text-align:center;" | 1
 * style="color:inherit;background:;" |
 * Democrito O. Plaza
 * December 30, 1969
 * September 23, 1972
 * style="text-align:center;" | 7th
 * Liberal
 * Elected in 1969. Removed from office after imposition of martial law.
 * colspan="8" style="text-align:center;" | District dissolved into the nine-seat Region X's at-large district for the Interim Batasang Pambansa.
 * Elected in 1969. Removed from office after imposition of martial law.
 * colspan="8" style="text-align:center;" | District dissolved into the nine-seat Region X's at-large district for the Interim Batasang Pambansa.
 * colspan="8" style="text-align:center;" | District dissolved into the nine-seat Region X's at-large district for the Interim Batasang Pambansa.
 * colspan="8" style="text-align:center;" |
 * colspan="8" style="text-align:center;" |

Agusan del Sur's at-large district for the Regular Batasang Pambansa
! rowspan="2" | # ! rowspan="2" colspan=2 | Member ! colspan=2 | Term of office ! rowspan="2" | Congress ! rowspan="2" | Party ! rowspan="2" | Electoral history !Start!!End
 * colspan="8" style="text-align:center;" | District re-created February 1, 1984.
 * style="text-align:center;" | (1)
 * style="color:inherit;background:;" |
 * Democrito O. Plaza
 * July 23, 1984
 * March 25, 1986
 * style="text-align:center;" | 2nd
 * KBL
 * Elected in 1984.
 * KBL
 * Elected in 1984.
 * colspan="8" style="text-align:center;" |
 * colspan="8" style="text-align:center;" |

Agusan del Sur's at-large district for the House of Representatives of the Philippines

 * colspan="8" style="text-align:center;" | District re-created February 2, 1987.
 * style="text-align:center;" | (1)
 * style="color:inherit;background:;" |
 * Democrito O. Plaza
 * June 30, 1987
 * June 30, 1992
 * style="text-align:center;" | 8th
 * LDP
 * Elected in 1987.
 * rowspan="2" style="text-align:center;" | 2
 * rowspan="2" style="color:inherit;background:;" |
 * rowspan="2" | Ceferino S. Paredes Jr.
 * rowspan="2" | June 30, 1992
 * rowspan="2" | June 30, 1998
 * style="text-align:center;" | 9th
 * rowspan="2" | NPC
 * Elected in 1992.
 * style="text-align:center;" | 10th
 * Re-elected in 1995.
 * style="text-align:center;" | 3
 * style="color:inherit;background:;" |
 * Alex G. Bascug
 * June 30, 1998
 * June 30, 2001
 * style="text-align:center;" | 11th
 * LAMMP
 * Elected in 1998.
 * rowspan="3" style="text-align:center;" | 4
 * style="color:inherit;background:;" |
 * rowspan="3" | Rodolfo Plaza
 * rowspan="3" | June 30, 2001
 * rowspan="3" | June 30, 2010
 * style="text-align:center;" | 12th
 * LDP
 * Elected in 2001.
 * rowspan="2" style="color:inherit;background:;" |
 * style="text-align:center;" | 13th
 * rowspan="2" | NPC
 * Re-elected in 2004.
 * style="text-align:center;" | 14th
 * Re-elected in 2007.
 * colspan="8" style="text-align:center;" | District dissolved into Agusan del Sur's 1st and 2nd districts.
 * }
 * style="text-align:center;" | 13th
 * rowspan="2" | NPC
 * Re-elected in 2004.
 * style="text-align:center;" | 14th
 * Re-elected in 2007.
 * colspan="8" style="text-align:center;" | District dissolved into Agusan del Sur's 1st and 2nd districts.
 * }
 * colspan="8" style="text-align:center;" | District dissolved into Agusan del Sur's 1st and 2nd districts.
 * }