Oriental Mindoro's 1st congressional district

Oriental Mindoro's 1st congressional district is one of the two congressional districts of the Philippines in the province of Oriental Mindoro. It has been represented in the House of Representatives since 1987. The district encompasses the province's northern half composed of its capital city Calapan and the municipalities of Baco, Naujan, Pola, Puerto Galera, San Teodoro, Socorro and Victoria. It is currently represented in the 19th Congress by Arnan C. Panaligan 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 ! rowspan="2" | Constituent LGUs !Start!!End
 * colspan="9" style="text-align:center;" |
 * colspan="9" style="text-align:center;" |

Oriental Mindoro's 1st district for the House of Representatives of the Philippines

 * colspan="9" style="text-align:center;" | District created February 2, 1987 from Oriental Mindoro's at-large district.
 * style="text-align:center;" | 1
 * style="color:inherit;background:;" |
 * Rodolfo G. Valencia
 * June 30, 1987
 * June 30, 1992
 * style="text-align:center;" | 8th
 * Liberal
 * Elected in 1987.
 * rowspan="12" style="text-align:center;" | 1987–present Baco, Calapan, Naujan, Pola, Puerto Galera, San Teodoro, Socorro, Victoria
 * rowspan="3" style="text-align:center;" | 2
 * style="color:inherit;background:;" |
 * rowspan="3" | Renato V. Leviste
 * rowspan="3" | June 30, 1992
 * rowspan="3" | June 30, 2001
 * style="text-align:center;" | 9th
 * Nacionalista
 * Elected in 1992.
 * rowspan="2" style="color:inherit;background:;" |
 * style="text-align:center;" | 10th
 * rowspan="2" | Lakas
 * Re-elected in 1995.
 * style="text-align:center;" | 11th
 * Re-elected in 1998.
 * style="text-align:center;" | 3
 * style="color:inherit;background:;" |
 * Charity P. Leviste
 * June 30, 2001
 * June 30, 2004
 * style="text-align:center;" | 12th
 * Lakas
 * Elected in 2001.
 * rowspan="3" style="text-align:center;" | (1)
 * style="color:inherit;background:;" |
 * rowspan="3" | Rodolfo G. Valencia
 * rowspan="3" | June 30, 2004
 * rowspan="3" | June 30, 2013
 * style="text-align:center;" | 13th
 * Liberal
 * Elected in 2004.
 * style="color:inherit;background:;" |
 * style="text-align:center;" | 14th
 * Lakas
 * Re-elected in 2007.
 * style="color:inherit;background:;" |
 * style="text-align:center;" | 15th
 * Liberal
 * Re-elected in 2010.
 * rowspan="3" style="text-align:center;" | 4
 * style="color:inherit;background:;" |
 * rowspan="3" | Paulino Salvador Leachon
 * rowspan="3" | June 30, 2013
 * rowspan="3" | June 30, 2022
 * style="text-align:center;" | 16th
 * Liberal
 * Elected in 2013.
 * rowspan="2" style="color:inherit;background:;" |
 * style="text-align:center;" | 17th
 * rowspan="2" | PDP–Laban
 * Re-elected in 2016.
 * style="text-align:center;" | 18th
 * Re-elected in 2019.
 * style="text-align:center;" | 5
 * style="color:inherit;background:;" |
 * Arnan C. Panaligan
 * June 30, 2022
 * ''Incumbent
 * style="text-align:center;" | 19th
 * Lakas
 * Elected in 2022.
 * }
 * style="text-align:center;" | 18th
 * Re-elected in 2019.
 * style="text-align:center;" | 5
 * style="color:inherit;background:;" |
 * Arnan C. Panaligan
 * June 30, 2022
 * ''Incumbent
 * style="text-align:center;" | 19th
 * Lakas
 * Elected in 2022.
 * }
 * Elected in 2022.
 * }