Dinagat Islands's at-large congressional district

Dinagat Islands's at-large congressional district is the sole congressional district of the Philippines in the province of Dinagat Islands. It was created ahead of the 2007 Philippine House of Representatives elections, following the separation of the islands from Surigao del Norte in 2006. The province has been electing a single representative provincewide at-large to the House of Representatives from the 14th Congress onwards. It is currently represented in the 18th Congress by Alan Ecleo 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 !Start!!End
 * colspan="8" style="text-align:center;" |
 * colspan="8" style="text-align:center;" |

Dinagat Islands's at-large district for the House of Representatives of the Philippines

 * colspan="8" style="text-align:center;" | District created December 2, 2006 from Surigao del Norte's 1st district.
 * style="text-align:center;" | 1
 * style="color:inherit;background:;" |
 * Glenda B. Ecleo
 * June 30, 2007
 * June 30, 2010
 * style="text-align:center;" | 14th
 * Lakas
 * Re-elected in 2007.
 * style="text-align:center;" | 2
 * style="color:inherit;background:;" |
 * Ruben B. Ecleo Jr.
 * June 30, 2010
 * May 22, 2012
 * rowspan="2" style="text-align:center;" | 15th
 * Lakas
 * Elected in 2010. Removed from office due to criminal conviction.
 * style="text-align:center;" | —
 * vacant
 * May 22, 2012
 * June 30, 2013
 * No special election held to fill vacancy.
 * rowspan="2" style="text-align:center;" | 3
 * rowspan="2" style="color:inherit;background:;" |
 * rowspan="2" | Kaka Bag-ao
 * rowspan="2" | June 30, 2013
 * rowspan="2" | June 30, 2019
 * style="text-align:center;" | 16th
 * rowspan="2" | Liberal
 * Elected in 2013.
 * style="text-align:center;" | 17th
 * Re-elected in 2016.
 * rowspan="2" style="text-align:center;" | 4
 * rowspan="2" style="color:inherit;background:;" |
 * rowspan="2" | Alan B. Ecleo
 * rowspan="2" | June 30, 2019
 * rowspan="2" | Incumbent
 * style="text-align:center;" | 18th
 * rowspan="2" | Lakas
 * Elected in 2019.
 * style="text-align:center;" | 19th
 * Re-elected in 2022.
 * }
 * rowspan="2" | Alan B. Ecleo
 * rowspan="2" | June 30, 2019
 * rowspan="2" | Incumbent
 * style="text-align:center;" | 18th
 * rowspan="2" | Lakas
 * Elected in 2019.
 * style="text-align:center;" | 19th
 * Re-elected in 2022.
 * }
 * }