The Philippine–American War, known alternatively as the Philippine Insurrection, Filipino–American War, or Tagalog Insurgency, was fought between the First Philippine Republic and the United States from February 4, 1899, until July 2, 1902. Tensions arose after the United States annexed the Philippines under the Treaty of Paris at the conclusion of the Spanish–American War rather than acknowledging the Philippines' declaration of independence. The war can be seen as a continuation of the Philippine struggle for independence that began in 1896 with the Philippine Revolution against Spanish rule.

The Philippine Republic, now officially remembered as the First Philippine Republic and also referred to by historians as the Malolos Republic, was established in Malolos, Bulacan during the Philippine Revolution against the Spanish Empire (1896–1898) and the Spanish–American War between Spain and the United States (1898) through the promulgation of the Malolos Constitution on January 22, 1899, succeeding the Revolutionary Government of the Philippines. It was formally established with Emilio Aguinaldo as president. It maintained governance until April 1, 1901.