Zamboanga del Norte's at-large congressional district is an obsolete congressional district that encompassed the area of Zamboanga del Norte in the Philippines.
[1] The province of Zamboanga del Norte was created as a result of the partition of Zamboanga in 1952 and elected its first representative provincewide at-large during the 1953 Philippine House of Representatives elections.
[2] Alberto Q. Ubay served as this district's first representative.
It was later absorbed by the multi-member Region IX's at-large district for the national parliament in 1978.
[1] In 1984, provincial and city representations were restored and Zamboanga del Norte elected two members for the regular parliament.