The Hukbong Bayan Laban sa Hapon, better known by the acronym Hukbalahap, was a Filipino communist guerrilla movement formed by the farmers of Central Luzon. They were originally formed to fight the Japanese, but extended their fight into a rebellion against the Philippine government, known as the Hukbalahap Rebellion, in 1946. It was put down through a series of reforms and military victories by Defense Secretary, and later President, Ramon Magsaysay.

The Hukbalahap Rebellion was a rebellion staged by former Hukbalahap or Hukbong Bayan Laban sa Hapon soldiers against the Philippine government. It started in 1942 during the Japanese occupation of the Philippines, continued during the presidency of Manuel Roxas, and ended in 1954 under the presidency of Ramon Magsaysay.