Cagayan de Oro's at-large congressional district

Cagayan de Oro's at-large congressional district is an obsolete congressional district that encompassed the entire Cagayan de Oro prior to its 2007 reapportionment that took effect in the same year. It existed from 1984 to 2007, when Cagayan de Oro elected a representative city-wide at-large to the Batasang Pambansa and to the restored House of Representatives. Before 1984 when it was granted its own seat in the regular Batasan assembly as a highly-urbanized city, Cagayan de Oro was represented as part of the multi-member Region X's at-large assembly district for the Interim Batasang Pambansa and was also included in Misamis Oriental's at-large congressional district in the earlier meetings of the Philippine national legislatures from 1931 to 1972. It was last represented by Constantino Jaraula of the Lakas–CMD.

Representation history
{| class=wikitable ! rowspan="2" | # ! rowspan="2" colspan=2 | Member ! colspan=2 | Term of office ! rowspan="2" | Batasang Pambansa ! rowspan="2" | Party ! rowspan="2" | Electoral history !Start!!End
 * colspan="8" style="text-align:center;" |
 * colspan="8" style="text-align:center;" |

Cagayan de Oro's at-large district for the Regular Batasang Pambansa
! rowspan="2" | # ! rowspan="2" colspan=2 | Member ! colspan=2 | Term of office ! rowspan="2" | Congress ! rowspan="2" | Party ! rowspan="2" | Electoral history !Start!!End
 * colspan="8" style="text-align:center;" | District created February 1, 1984 from Region X's at-large district.
 * style="text-align:center;" | 1
 * style="color:inherit;background:;" |
 * Aquilino Pimentel Jr.
 * July 23, 1984
 * March 25, 1986
 * style="text-align:center;" | 2nd
 * PDP–Laban
 * Elected in 1984.
 * PDP–Laban
 * Elected in 1984.
 * colspan="8" style="text-align:center;" |
 * colspan="8" style="text-align:center;" |

Cagayan de Oro's at-large district for the House of Representatives of the Philippines

 * colspan="8" style="text-align:center;" | District re-created February 2, 1987.
 * style="text-align:center;" | 2
 * style="color:inherit;background:;" |
 * Benedicta B. Roa
 * November 16, 1987
 * June 30, 1992
 * style="text-align:center;" | 8th
 * Lakas ng Bansa
 * Elected in 1987.
 * rowspan="2" style="text-align:center;" | 3
 * style="color:inherit;background:;" |
 * rowspan="2" | Erasmo B. Damasing
 * rowspan="2" | June 30, 1992
 * rowspan="2" | June 30, 1998
 * style="text-align:center;" | 9th
 * Liberal
 * Elected in 1992.
 * style="color:inherit;background:;" |
 * style="text-align:center;" | 10th
 * Lakas–CMD
 * Re-elected in 1995.
 * rowspan="3" style="text-align:center;" | 4
 * style="color:inherit;background:;" |
 * rowspan="3" | Constantino Jaraula
 * rowspan="3" | June 30, 1998
 * rowspan="3" | June 30, 2007
 * style="text-align:center;" | 11th
 * LAMMP
 * Elected in 1998.
 * style="color:inherit;background:;" |
 * style="text-align:center;" | 12th
 * LDP
 * Re-elected in 2001.
 * style="color:inherit;background:;" |
 * style="text-align:center;" | 13th
 * Lakas–CMD
 * Re-elected in 2004.
 * colspan="8" style="text-align:center;" | District dissolved into Cagayan de Oro's 1st and 2nd districts.
 * }
 * style="color:inherit;background:;" |
 * style="text-align:center;" | 13th
 * Lakas–CMD
 * Re-elected in 2004.
 * colspan="8" style="text-align:center;" | District dissolved into Cagayan de Oro's 1st and 2nd districts.
 * }
 * colspan="8" style="text-align:center;" | District dissolved into Cagayan de Oro's 1st and 2nd districts.
 * }