Zamboanga Sibugay's 1st congressional district

Zamboanga Sibugay's 1st congressional district is one of the two congressional districts of the Philippines in the province of Zamboanga Sibugay. 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 eastern municipalities of Alicia, Buug, Diplahan, Imelda, Mabuhay, Malangas, Olutanga, Payao and Talusan. It is currently represented in the 19th Congress by Wilter Palma 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;" |

Zamboanga Sibugay's 1st district for the House of Representatives of the Philippines

 * colspan="9" style="text-align:center;" | District created July 24, 2006 from Zamboanga Sibugay's at-large district.
 * style="text-align:center;" | 1
 * style="color:inherit;background:;" |
 * Belma A. Cabilao
 * June 30, 2007
 * June 30, 2010
 * style="text-align:center;" | 14th
 * Lakas
 * Re-elected in 2007.
 * rowspan="6" style="text-align:center;" | 2007–present Alicia, Buug, Diplahan, Imelda, Mabuhay, Malangas, Olutanga, Payao, Talusan
 * style="text-align:center;" | 2
 * style="color:inherit;background:;" |
 * Jonathan C. Yambao
 * June 30, 2010
 * June 30, 2013
 * style="text-align:center;" | 15th
 * Nacionalista
 * Elected in 2010.
 * style="text-align:center;" | (1)
 * style="color:inherit;background:;" |
 * Belma A. Cabilao
 * June 30, 2013
 * June 30, 2016
 * style="text-align:center;" | 16th
 * Nacionalista
 * Elected in 2013.
 * rowspan="2" style="text-align:center;" | 3
 * style="color:inherit;background:;" |
 * rowspan="2" | Wilter W. Palma II
 * rowspan="2" | June 30, 2016
 * rowspan="2" | June 30, 2022
 * style="text-align:center;" | 17th
 * PDP–Laban
 * Elected in 2016.
 * style="color:inherit;background:;" |
 * style="text-align:center;" | 18th
 * Lakas
 * Re-elected in 2019.
 * style="text-align:center;" | 4
 * style="color:inherit;background:;" |
 * Wilter Y. Palma
 * June 30, 2022
 * Incumbent Term expires June 30, 2025
 * style="text-align:center;" | 19th
 * Lakas
 * Elected in 2022.
 * }
 * Wilter Y. Palma
 * June 30, 2022
 * Incumbent Term expires June 30, 2025
 * style="text-align:center;" | 19th
 * Lakas
 * Elected in 2022.
 * }