Cotabato's 3rd congressional district

Cotabato's 3rd congressional district is one of the three congressional districts of the Philippines in the province of Cotabato. It has been represented in the House of Representatives since 2013. The district covers central and southern Cotabato bordering Maguindanao to the west and Lanao del Sur to the north. It consists of the municipalities of Banisilan, Carmen, Kabacan, M'lang, Matalam and Tulunan. The district contains several exclaves of the Bangsamoro autonomous region. It is currently represented in the 19th Congress by Samantha Santos 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;" |

Cotabato's 3rd district for the House of Representatives of the Philippines

 * colspan="9" style="text-align:center;" | District created September 14, 2012.
 * rowspan="3" style="text-align:center;" | 1
 * rowspan="3" style="color:inherit;background:;" |
 * rowspan="3" | Jose I. Tejada
 * rowspan="3" | June 30, 2013
 * rowspan="3" | June 30, 2022
 * style="text-align:center;" | 16th
 * rowspan="3" | Nacionalista
 * Elected in 2013.
 * rowspan=99 style="text-align:center;" | 2013–present Banisilan, Carmen, Kabacan, M'lang, Matalam, Tulunan
 * style="text-align:center;" | 17th
 * Re-elected in 2016.
 * style="text-align:center;" | 18th
 * Re-elected in 2019.
 * style="text-align:center;" | 2
 * style="color:inherit;background:;" |
 * Ma. Alana Samantha T. Santos
 * June 30, 2022
 * Incumbent
 * style="text-align:center;" | 19th
 * Lakas
 * Elected in 2022.
 * }
 * Incumbent
 * style="text-align:center;" | 19th
 * Lakas
 * Elected in 2022.
 * }