Valenzuela's 1st congressional district

Valenzuela's 1st congressional district is one of the two congressional districts of the Philippines in the city of Valenzuela. It has been represented in the House of Representatives of the Philippines since 2001. The district was created following Valenzuela's conversion into a highly urbanized city through Republic Act No. 8526 on February 14, 1998. It consists of 24 barangays in the northern part of the city, namely Arkong Bato, Balangkas, Bignay, Bisig, Canumay East, Canumay West, Coloong, Dalandanan, Isla, Lawang Bato, Lingunan, Mabolo, Malanday, Malinta, Palasan, Pariancillo Villa, Pasolo, Poblacion, Polo, Punturin, Rincon, Tagalag, Veinte Reales and Wawang Pulo. It is currently vacant for the 19th Congress since the resignation of its most recent representative Rex Gatchalian upon assuming the position of Secretary of Social Welfare and Development in 2023.

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;" |

Valenzuela's 1st district for the House of Representatives of the Philippines

 * colspan="9" style="text-align:center;" | District created February 14, 1998 from Valenzuela's at-large district.
 * style="text-align:center;" | 1
 * style="color:inherit;background:;" |
 * Win Gatchalian
 * June 30, 2001
 * June 30, 2004
 * style="text-align:center;" | 12th
 * NPC
 * Elected in 2001.
 * rowspan="4" style="text-align:center;" | 2001–2013 Arkong Bato, Balangkas, Bignay, Bisig, Canumay, Coloong, Dalandanan, Isla, Lawang Bato, Lingunan, Mabolo, Malanday, Malinta, Palasan, Pariancillo Villa, Pasolo, Poblacion, Polo, Punturin, Rincon, Tagalag, Veinte Reales, Wawang Pulo
 * style="text-align:center;" | 2
 * style="color:inherit;background:;" |
 * Bobbit Carlos
 * June 30, 2004
 * June 30, 2007
 * style="text-align:center;" | 13th
 * Lakas
 * Elected in 2004.
 * rowspan="2" style="text-align:center;" | 3
 * rowspan="2" style="color:inherit;background:;" |
 * rowspan="2" | Rex Gatchalian
 * rowspan="2" | June 30, 2007
 * rowspan="2" | June 30, 2013
 * style="text-align:center;" | 14th
 * rowspan="2" | NPC
 * Elected in 2007.
 * style="text-align:center;" | 15th
 * Re-elected in 2010.
 * style="text-align:center;" | (1)
 * style="color:inherit;background:;" |
 * Win Gatchalian
 * June 30, 2013
 * June 30, 2016
 * style="text-align:center;" | 16th
 * NPC
 * Elected in 2013.
 * rowspan="5" style="text-align:center;" | 2013–present Arkong Bato, Balangkas, Bignay, Bisig, Canumay East, Canumay West, Coloong, Dalandanan, Isla, Lawang Bato, Lingunan, Mabolo, Malanday, Malinta, Palasan, Pariancillo Villa, Pasolo, Poblacion, Polo, Punturin, Rincon, Tagalag, Veinte Reales, Wawang Pulo
 * rowspan="2" style="text-align:center;" | 4
 * rowspan="2" style="color:inherit;background:;" |
 * rowspan="2" | Weslie Gatchalian
 * rowspan="2" | June 30, 2016
 * rowspan="2" | June 30, 2022
 * style="text-align:center;" | 17th
 * rowspan="2" | NPC
 * Elected in 2016.
 * style="text-align:center;" | 18th
 * Re-elected in 2019.
 * style="text-align:center;" | (3)
 * style="color:inherit;background:;" |
 * Rex Gatchalian
 * June 30, 2022
 * January 31, 2023
 * rowspan="2" style="text-align:center;" | 19th
 * NPC
 * Elected in 2022. Resigned on appointment as Secretary of Social Welfare and Development.
 * style="text-align:center;" | —
 * vacant
 * January 31, 2023
 * Present
 * colspan="2" | Mark Enverga (Quezon–1st) was designated as the caretaker of the district.
 * }
 * rowspan="2" style="text-align:center;" | 19th
 * NPC
 * Elected in 2022. Resigned on appointment as Secretary of Social Welfare and Development.
 * style="text-align:center;" | —
 * vacant
 * January 31, 2023
 * Present
 * colspan="2" | Mark Enverga (Quezon–1st) was designated as the caretaker of the district.
 * }
 * colspan="2" | Mark Enverga (Quezon–1st) was designated as the caretaker of the district.
 * }

2022
Incumbent representative is Wes Gatchalian.