The Office of the President of the Philippines (OP; Filipino: Tanggapan ng Pangulo ng Pilipinas),[2] is an administrative, advisory, and consultative government agency that aids the president of the Philippines in performing their duty as head of state and chief of the executive branch of government.

The order was issued following the submission of position papers by the officials of the Department of History of the University of the Philippines, and the Board of National Historical Institute which conducted deliberations and consultations in four meetings held at the Malacañang Palace from May 5 to June 25, 1997.

The convention was held on March 22, 1897, which saw the election of Emilio Aguinaldo as President of the Revolutionary Government of the Philippines.

[4] The OP was abolished after the capture of Aguinaldo in 1901 by the Americans and was reinstated after the proclamation of the Philippine Commonwealth in 1935.

Based on said executive powers of the President, the OP proper would perform the following core functions:[7] Listed below are agencies that have been abolished, transferred, integrated, merged, reorganized or renamed into the existing attached agencies under the Office of the President and the executive departments of the Philippines.