Thelegislative district of Kalinga-Apayao was the representation of the historicalprovince ofKalinga-Apayao in thevarious national legislatures of thePhilippines. Since 1998, the province has been represented in thelower house of theCongress of the Philippines through the separate lone congressional districts ofApayao andKalinga.

Prior to gaining separate representation, areas formerly under the jurisdiction of Kalinga-Apayao were represented under the undividedMountain Province (1917–1969).

The enactment of Republic Act No. 4695 on 18 June 1966 combined the sub-provinces of Apayao and Kalinga into a full-fledged province namedKalinga-Apayao.^[1] The new province began electing itsseparate representative in1969.

Kalinga-Apayao was represented as part ofRegion II from 1978 to 1984, and returnedone representative, elected at large, to theRegular Batasang Pambansa in1984.

Under the new Constitution which was proclaimed on 11 February 1987, the province constituted alone congressional district,^[2] and elected its member to the restoredHouse of Representatives startingthat same year.

Apayao andKalinga became separate provinces following the passage and subsequent ratification of Republic Act No. 7878 on May 8, 1995.^[3] The new provinces began electing their separate representatives in the1998 elections.

• Legislative district of Apayao
• Legislative district of Kalinga
• Legislative districts of the Mountain Province

• Former legislative districts of the Philippines

• CS1 maint: numeric names: authors list