Davao Oriental's at-large congressional district is an obsolete congressional district that encompassed the entire province of Davao Oriental in the Philippines. It was represented in the House of Representatives from 1968 to 1972 and in the Regular Batasang Pambansa from 1984 to 1986.[1] The province of Davao Oriental was created as a result of the partition of Davao in 1967 and elected its first representative provincewide at-large during the 1967 Philippine House of Representatives special elections.[2] Constancio P. Maglana served as this district's first representative. The district remained a single-member district until the dissolution of the lower house in 1972. It was later absorbed by the multi-member Region XI's at-large district for the national parliament in 1978.[1] In 1984, provincial and city representations were restored and Davao Oriental elected one member for the regular parliament.[3] The district was abolished following the 1987 reapportionment to establish two districts under a new constitution.[4]