Iloilo's at-large congressional district

Iloilo's at-large congressional district refers to the provincewide electoral district that was used to elect members of Philippine national legislatures in Iloilo before 1987.

Iloilo first elected its representatives at-large in the 1943 Philippine legislative election for a seat in the National Assembly of the Second Philippine Republic, with a separate district created for Iloilo City being a chartered city since 1936. Before 1943, the province which also included Guimaras was represented in the national legislatures through its first, second, third, fourth and fifth districts. The  province was also earlier represented in the Malolos Congress of the First Philippine Republic in 1898 by appointed delegates residing in Luzon.

The five districts were restored in Iloilo ahead of the 1941 Philippine House of Representatives elections whose elected representatives only began to serve following the dissolution of the Second Republic and the restoration of the Philippine Commonwealth in 1945. An at-large district would not be used in the province again until the 1984 Philippine parliamentary election for five seats in the Batasang Pambansa which it shared with its highly urbanized capital city. It became obsolete following the 1987 reapportionment under a new constitution that restored the five districts in Iloilo and Iloilo City's at-large district.

Representation history
{| class=wikitable ! rowspan=2 | # ! colspan=2 | Term of office ! rowspan=2 | National Assembly ! colspan=4 | Seat A ! colspan=4 | Seat B ! colspan=4 | Seat C ! colspan=4 | Seat D !Start!!End ! colspan="2" style="text-align:center;" | Member ! Party ! Electoral history ! colspan="2" style="text-align:center;" | Member ! Party ! Electoral history ! colspan="2" style="text-align:center;" | Member ! Party ! Electoral history ! colspan="2" style="text-align:center;" | Member ! Party ! Electoral history
 * rowspan=2 |
 * rowspan=2 |
 * rowspan=2 |
 * rowspan=2 |
 * - style="height:3em"
 * colspan="24" style="text-align:center;" |
 * colspan="24" style="text-align:center;" |

Iloilo's at-large district for the Malolos Congress
! rowspan=2 | # ! colspan=2 | Term of office ! rowspan=2 | National Assembly ! colspan=4 | Seat A ! colspan=4 | Seat B !Start!!End ! colspan="2" style="text-align:center;" | Member ! Party ! Electoral history ! colspan="2" style="text-align:center;" | Member ! Party ! Electoral history
 * colspan="24" style="text-align:center;" | District created June 18, 1898.
 * - style="height:3em"
 * style="text-align:center;" | –
 * September 15, 1898
 * March 23, 1901
 * style="text-align:center;" | 1st
 * style="color:inherit;background:;" |
 * Venancio Concepción
 * Independent
 * Appointed.
 * style="color:inherit;background:;" |
 * Melecio Figueroa
 * Independent
 * Appointed.
 * style="color:inherit;background:;" |
 * Tiburcio Hilario
 * Independent
 * Appointed.
 * style="color:inherit;background:;" |
 * Esteban de la Rama
 * Independent
 * Appointed.
 * Appointed.
 * style="color:inherit;background:;" |
 * Esteban de la Rama
 * Independent
 * Appointed.
 * Appointed.
 * rowspan=2 |
 * rowspan=2 |
 * rowspan=6 colspan=10 style="text-align:center;" | Seats eliminated
 * - style="height:3em"
 * colspan="14" style="text-align:center;" |
 * colspan="14" style="text-align:center;" |

Iloilo's at-large district for the National Assembly (Second Philippine Republic)
! rowspan=2 | # ! colspan=2 | Term of office ! rowspan=2 | Batasang Pambansa ! colspan=4 | Seat A ! colspan=4 | Seat B ! colspan=4 | Seat C ! colspan=4 | Seat D ! colspan=4 | Seat E !Start!!End ! colspan="2" style="text-align:center;" | Member ! Party ! Electoral history ! colspan="2" style="text-align:center;" | Member ! Party ! Electoral history ! colspan="2" style="text-align:center;" | Member ! Party ! Electoral history ! colspan="2" style="text-align:center;" | Member ! Party ! Electoral history ! colspan="2" style="text-align:center;" | Member ! Party ! Electoral history
 * colspan="14" style="text-align:center;" | District re-created September 7, 1943.
 * style="text-align:center;" | –
 * September 25, 1943
 * February 2, 1944
 * style="text-align:center;" | 1st
 * style="color:inherit;background:;" |
 * Cirilo Mapa Jr.
 * KALIBAPI
 * Elected in 1943.
 * style="color:inherit;background:;" |
 * Fermín C. Caram
 * KALIBAPI
 * Appointed as an ex officio member.
 * colspan="14" style="text-align:center;" | District dissolved into Iloilo's 1st, 2nd, 3rd, 4th and 5th districts.
 * Fermín C. Caram
 * KALIBAPI
 * Appointed as an ex officio member.
 * colspan="14" style="text-align:center;" | District dissolved into Iloilo's 1st, 2nd, 3rd, 4th and 5th districts.
 * colspan="14" style="text-align:center;" | District dissolved into Iloilo's 1st, 2nd, 3rd, 4th and 5th districts.
 * rowspan=2 |
 * rowspan=2 |
 * rowspan=2 |
 * rowspan=2 |
 * rowspan=2 |
 * - style="height:3em"
 * colspan="29" style="text-align:center;" |
 * colspan="29" style="text-align:center;" |

Iloilo's at-large district for the Regular Batasang Pambansa

 * colspan="29" style="text-align:center;" | District re-created February 1, 1984.
 * - style="height:3em"
 * style="text-align:center;" | –
 * July 23, 1984
 * March 25, 1986
 * style="text-align:center;" | 2nd
 * style="color:inherit;background:;" |
 * Salvador B. Britanico
 * KBL
 * Elected in 1984.
 * style="color:inherit;background:;" |
 * Fermin Z. Caram Jr.
 * UNIDO
 * Elected in 1984.
 * style="color:inherit;background:;" |
 * Arthur Defensor Sr.
 * UNIDO
 * Elected in 1984.
 * style="color:inherit;background:;" |
 * Narciso D. Monfort
 * KBL
 * Elected in 1984.
 * style="color:inherit;background:;" |
 * Rafael P. Palmares
 * Nacionalista
 * Elected in 1984.
 * colspan="29" style="text-align:center;" | District dissolved into Iloilo's 1st, 2nd, 3rd, 4th, 5th and Iloilo City's at-large districts.
 * }
 * style="color:inherit;background:;" |
 * Rafael P. Palmares
 * Nacionalista
 * Elected in 1984.
 * colspan="29" style="text-align:center;" | District dissolved into Iloilo's 1st, 2nd, 3rd, 4th, 5th and Iloilo City's at-large districts.
 * }
 * }