2004 Philippine House of Representatives elections

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The 2004 Philippine House of Representatives elections were held on May 10, 2004 to elect the 13th Congress (2004–2007).

What was elected and how many seats
- Total seats: 261 (209 from districts, 52 from party-list)
- Majority needed: 131
- The election was held together with the presidential vote.

Main outcome
- The administration’s party, Lakas-CMD, and its K4 coalition won the majority of seats.

Districts results (key figures)
- Lakas-CMD: 92 seats (up 13)
- NPC: 53
- Liberal: 29
- LDP: 15
- PMP: 5
- Aksyon: 2
- Kampi: 2
- Nacionalista: 2
- PDP–Laban: 2
- KBL: 1
- PDSP: 1
- Reporma: 1
- Independents: 4

Party-list results
- 52 party-list seats were awarded to various groups, including Bayan Muna, APEC, Akbayan, Buhay, Anakpawis, CIBAC, Gabriela, PM, Butil, AVE, Alagad, VFP, Coop-NATCCO, Anak Mindanao, ALIF, and An Waray.

Leadership
- The Speaker remained Jose de Venecia Jr. of Lakas before and after the election.

Redistricting and rules
- Three new districts were created in Metro Manila and nearby areas.
- The country uses a mix of district seats and party-list seats, with rules on how party-list seats are allocated and how reapportionment/redistricting works between censuses. National reapportionment had not occurred since the 1987 constitution.