Sultan Kudarat's 1st congressional district

Sultan Kudarat's 1st congressional district is one of the two congressional districts of the Philippines in the province of Sultan Kudarat. It has been represented in the House of Representatives since 2007. It was created after the 2006 reapportionment that divided the province into two congressional districts. The district is composed of the provincial capital, Isulan, its largest city, Tacurong, and the eastern municipalities of Columbio, Lambayong, Lutayan and President Quirino. It is currently represented in the 19th Congress by Bai Rihan M. Sakaluran of the Lakas–CMD.

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 ! rowspan="2" | Constituent LGUs !Start!!End
 * colspan="9" style="text-align:center;" |
 * colspan="9" style="text-align:center;" |

Sultan Kudarat's 1st district for the House of Representatives of the Philippines

 * colspan="9" style="text-align:center;" | District created October 2, 2006 from Sultan Kudarat's at-large district.
 * style="text-align:center;" | 1
 * style="color:inherit;background:;" |
 * Pax Mangudadatu
 * June 30, 2007
 * June 30, 2010
 * style="text-align:center;" | 14th
 * Lakas
 * Elected in 2007.
 * rowspan=99 style="text-align:center;" | 2007–present Columbio, Isulan, Lambayong, Lutayan, President Quirino, Tacurong
 * rowspan="2" style="text-align:center;" | 2
 * rowspan="2" style="color:inherit;background:;" |
 * rowspan="2" | Raden C. Sakaluran
 * rowspan="2" | June 30, 2010
 * rowspan="2" | June 30, 2016
 * style="text-align:center;" | 15th
 * rowspan="2" | Independent
 * Elected in 2010.
 * style="text-align:center;" | 16th
 * Re-elected in 2013.
 * style="text-align:center;" | 3
 * style="color:inherit;background:;" |
 * Suharto Mangudadatu
 * June 30, 2016
 * June 30, 2019
 * style="text-align:center;" | 17th
 * NUP
 * Elected in 2016.
 * rowspan="2" style="text-align:center;" | 4
 * style="color:inherit;background:;" |
 * rowspan="2" | Rihan M. Sakaluran
 * rowspan="2" | June 30, 2019
 * rowspan="2" | Incumbent
 * style="text-align:center;" | 18th
 * NUP
 * Elected in 2019.
 * style="color:inherit;background:;" |
 * style="text-align:center;" | 19th
 * Lakas
 * Re-elected in 2022.
 * }
 * Elected in 2019.
 * style="color:inherit;background:;" |
 * style="text-align:center;" | 19th
 * Lakas
 * Re-elected in 2022.
 * }
 * }