Zamboanga del Sur's 1st congressional district

Zamboanga del Sur's 1st congressional district is one of the two congressional districts of the Philippines in the province of Zamboanga del Sur. It has been represented in the House of Representatives since 1987. The district encompasses the northern half of the province consisting of its provincial capital city of Pagadian and the municipalities of Aurora, Dumingag, Josefina, Labangan, Mahayag, Midsalip, Molave, Ramon Magsaysay, Sominot, Tambulig and Tukuran. It is currently represented in the 18th Congress by Divina Grace Yu 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 del Sur's 1st district for the House of Representatives of the Philippines
18th
 * colspan="9" style="text-align:center;" | District created February 2, 1987 from Zamboanga del Sur's at-large district.
 * style="text-align:center;" | 1
 * style="color:inherit;background:;" |
 * Isidoro E. Real Jr.
 * June 30, 1987
 * June 30, 1992
 * style="text-align:center;" | 8th
 * PDP–Laban
 * Elected in 1987.
 * style="text-align:center;" | 1987–1992 Aurora, Don Mariano Marcos, Dumingag, Josefina, Labangan, Mahayag, Midsalip, Molave, Pagadian, Ramon Magsaysay, Tambulig, Tukuran
 * rowspan="3" style="text-align:center;" | 2
 * rowspan="2" style="color:inherit;background:;" |
 * rowspan="3" | Alejandro S. Urro
 * rowspan="3" | June 30, 1992
 * rowspan="3" | June 30, 2001
 * style="text-align:center;" | 9th
 * rowspan="2" | Lakas
 * Elected in 1992.
 * rowspan="11" style="text-align:center;" | 1992–present Aurora, Dumingag, Josefina, Labangan, Mahayag, Midsalip, Molave, Pagadian, Ramon Magsaysay, Sominot, Tambulig, Tukuran
 * style="text-align:center;" | 10th
 * Re-elected in 1995.
 * style="color:inherit;background:;" |
 * style="text-align:center;" | 11th
 * LDP
 * Re-elected in 1998.
 * rowspan="2" style="text-align:center;" | (1)
 * rowspan="2" style="color:inherit;background:;" |
 * rowspan="2" | Isidoro E. Real Jr.
 * rowspan="2" | June 30, 2001
 * rowspan="2" | June 30, 2007
 * style="text-align:center;" | 12th
 * rowspan="2" | Lakas
 * Elected in 2001.
 * style="text-align:center;" | 13th
 * Re-elected in 2004.
 * rowspan="3" style="text-align:center;" | 3
 * rowspan="3" style="color:inherit;background:;" |
 * rowspan="3" | Victor J. Yu
 * rowspan="3" | June 30, 2007
 * rowspan="3" | June 30, 2016
 * style="text-align:center;" | 14th
 * rowspan="3" | NPC
 * Elected in 2007.
 * style="text-align:center;" | 15th
 * Re-elected in 2010.
 * style="text-align:center;" | 16th
 * Re-elected in 2013.
 * rowspan="3" style="text-align:center;" | 4
 * rowspan="1" style="color:inherit;background:;" |
 * rowspan="3" | Divina Grace C. Yu
 * rowspan="3" | June 30, 2016
 * rowspan="3" | Incumbent
 * style="text-align:center;" | 17th
 * rowspan="1" | NPC
 * Elected in 2016.
 * style="color:inherit;background:;" |
 * style="text-align:center;" |
 * rowspan="3" style="text-align:center;" | 4
 * rowspan="1" style="color:inherit;background:;" |
 * rowspan="3" | Divina Grace C. Yu
 * rowspan="3" | June 30, 2016
 * rowspan="3" | Incumbent
 * style="text-align:center;" | 17th
 * rowspan="1" | NPC
 * Elected in 2016.
 * style="color:inherit;background:;" |
 * style="text-align:center;" |
 * style="color:inherit;background:;" |
 * style="text-align:center;" |
 * PDP–Laban
 * Re-elected in 2019.
 * style="color:inherit;background:;" |
 * style="text-align:center;" |19th
 * Lakas
 * Re-elected in 2022.
 * }
 * }

2019
Divina Grace Yu was the Incumbent.

2016
Victor Yu is the incumbent but ineligible for reelection. His party nominated his wife, Divina Grace Yu.

2013
Victor Yu was the incumbent.

2010
Victor Yu is the incumbent.