The Philippine Institute of Volcanology and Seismology (PHIVOLCS, Filipino: [ˈfivolks]; Filipino: Surian ng Pilipinas sa Bulkanolohiya at Sismolohiya[2]) is a Philippine national institution dedicated to provide information on the activities of volcanoes, earthquakes, and tsunamis, as well as other specialized information and services primarily for the protection of life and property and in support of economic, productivity, and sustainable development.

One of its first predecessors is the Philippine Weather Bureau created in 1901[4] when meteorological, seismological and terrestrial magnetic services of the Manila Observatory were transferred from the Roman Catholic Church to the American Colonial Government.

A United Nations Development Programme-funded project for PAGASA established a twelve-station earthquake monitoring network in the country.

In February 1951, Dr. Jose M. Feliciano, Chair of the Division of Physical and Mathematical Sciences of the National Research Council of the Philippines (NRCP) presented a proposal for the creation of a Commission on Volcanology.

Dr. Teresito C. Bacolcol was appointed as the new Director and took his oath on January 23, 2023, with Science and Technology Secretary Dr. Renato U. Solidum, Jr. in Quezon City.