The Philippine Expeditionary Force to Korea (PEFTOK) (Spanish: Fuerza Expedicionaria Filipina a Corea or FEFC, Tagalog: Puwersang Expedisyonarya ng Pilipinas sa Korea or PEPK, Korean: 필리핀 한국 원정군; RR: Pillipin han-guk wonjeonggun) was the Philippine Army contingent of the United Nations forces that fought in the Korean War (1950–1953). The unit arrived in Korea in August 1950. It was composed of 1,468 troops, and was the fifth largest force under the United Nations Command. The PEFTOK took part in the Battle of Miudong (which was hailed as the first battle won by Filipino soldiers in a foreign soil) Battle of Yultong and the Battle of Hill Eerie. The unit operated alongside the United States 1st Cavalry Division, 3rd Infantry Division, 25th Infantry Division, and 45th Infantry Division.

The Philippine Army (PA) is the main, oldest and largest branch of the Armed Forces of the Philippines (AFP), responsible for ground warfare and as of 2021 had an estimated strength of 143,100 soldiers backed by 131,000 ready reserves. The service branch was established on December 21, 1935, as the Philippine Commonwealth Army. The Philippine Army has engaged in many conflicts including the ongoing Communist rebellion in the Philippines, the Moro conflict and, alongside other national military forces, in conflicts of international scope.