Zamboanga del Sur's 3rd congressional district

Zamboanga del Sur's 3rd congressional district is an obsolete congressional district that encompassed the Sibuguey Bay region, a former territory of Zamboanga del Sur. It was represented in the House of Representatives from its creation under the ordinance annex of the 1987 Constitution of the Philippines that divided the province into three congressional districts, until 2001. The district was dissolved following the ratification of Zamboanga Sibugay's organic law of November 2000 and elected its own provincial at-large representative beginning in May 2001.

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 3rd district for the House of Representatives of the Philippines

 * 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:;" |
 * Wilfredo G. Cainglet
 * June 30, 1987
 * June 30, 1992
 * style="text-align:center;" | 8th
 * Lakas ng Bansa
 * Elected in 1987.
 * rowspan="4" style="text-align:center;" | 1987–2001 Alicia, Buug, Diplahan, Imelda, Ipil, Kabasalan, Mabuhay, Malangas, Naga, Olutanga, Payao, Roseller Lim, Siay, Talusan, Titay, Tungawan
 * rowspan="2" style="text-align:center;" | 2
 * rowspan="2" style="color:inherit;background:;" |
 * rowspan="2" | Belma A. Cabilao
 * rowspan="2" | June 30, 1992
 * rowspan="2" | June 30, 1998
 * style="text-align:center;" | 9th
 * rowspan="2" | Lakas–CMD
 * Elected in 1992.
 * style="text-align:center;" | 10th
 * Re-elected in 1995.
 * style="text-align:center;" | 3
 * style="color:inherit;background:;" |
 * George T. Hofer
 * June 30, 1998
 * June 30, 2001
 * style="text-align:center;" | 11th
 * LAMMP
 * Elected in 1998.
 * colspan="9" style="text-align:center;" | District dissolved into Zamboanga Sibugay's at-large district.
 * }
 * style="text-align:center;" | 11th
 * LAMMP
 * Elected in 1998.
 * colspan="9" style="text-align:center;" | District dissolved into Zamboanga Sibugay's at-large district.
 * }
 * }