1967 Philippine House of Representatives special elections

Five special elections (known as "by-elections" elsewhere) to the House of Representatives of the Philippines, the lower house of the Congress of the Philippines, were held on November 14, 1967, along with the 1967 Philippine Senate election and the 1967 Philippine constitutional plebiscite. These were for vacancies in the 6th Congress of the Philippines; the winners were to serve the rest of the term, which had ended on December 30, 1969. Political parties were allowed to field multiple candidates per district; the Nacionalista Party won in all districts.

These were the last special elections until the proclamation of martial law by president Ferdinand Marcos in 1972. The next such special elections are to be in 1993, or seven years after Marcos was overthrown after the People Power Revolution.

Electoral system
All seats in the House of Representatives were elected from single member districts, under the first-past-the-post voting system.

The following seats were up for election

In the cases of the special elections in Davao del Sur and Davao Oriental, it was due to the creation of these new provinces from the original Davao province. The congressman from the old Davao's at-large congressional district was free to choose which province he'd continue as an incumbent on. Lorenzo Sarmiento chose to continue at Davao del Norte, another newly created province, necessitating special elections in the other two provinces.
 * Davao del Sur's at-large district
 * Davao Oriental's at-large district
 * Ilocos Norte's 1st district
 * Northern Samar's at-large district
 * South Cotabato's at-large district

In South Cotabato, the law creating that province specified that the incumbent congressman of Cotabato's at-large congressional district (Salipada Pendatun) shall continue to serve as congressman of the original Cotabato province.

Davao del Sur
Davao del Sur was one of the provinces created from the division of the original Davao province.

The governor of undivided Davao province, Alejandro Almendras, supported Artemio Loyola, then switched his support to Vicente Duterte. Duterte was then Secretary of General Services, had previously served as governor of Davao, and wanted to revive his political career, but was defeated by Loyola. Duterte died in 1968.

Davao Oriental
Davao Oriental was one of the provinces created from the division of the original Davao province.

Ilocos Norte–1st
Incumbent Antonio Raquiza was appointed Secretary of Public Works. Ilocos Norte Provincial Board Member Roque Ablan Jr. was elected to replace Raquiza in the special election.

Northern Samar
Incumbent Eladio Balite died in office.

South Cotabato
South Cotabato was created from the division of the original Cotabato province.

Among the elections on this day, this district had the smallest margin, percentage-wise.