The Bulacan Battalion was a military unit within the Philippine Republican Army, composed of enlisted Filipino soldiers from the province of Bulacan.
It was stationed in the Fourth Zone of Manila from around August 1898 until the onset of the war and was under the command of General Pantaleon Garcia and Colonel Enrique Pacheco. It saw action in the Battle of Manila in 1899. Elements of the battalion were involved in the First and Second Battle of Caloocan, and the battles of Marilao River, Quingua, and Calumpit.