Commonwealth of the Philippines 2nd Infantry Division 2nd Infantry Regiment 61st Infantry Regiment Planning Section, HQ, Philippine Army World War II Battle of Cotabato (1941) Battle of Mindanao (1942) Battle of Bessang Pass (1945) Calixto Duque (October 14, 1893 – November 24, 1972) was a Filipino decorated military officer and a WW II veteran who served as Chief of Staff of the Armed Forces of the Philippines from 1951 to 1953 after his retirement.

He served in Mindanao where he participated in the campaign against the Moro outlaws in 1923; he was appointed as assistant Provincial Commander of Sulu in 1927.

[citation needed] He commanded the 2nd Infantry Regiment based at Camp Luna in Parang, Empire Province of Cotabato in Mindanao island.

[citation needed] He was appointed Commanding Officer of 2nd Infantry Division previously USAFIP-NL right after the hostilities ended in 1945.

He was appointed as Deputy Chief of the Philippine Army in 1946 and promoted to Brigadier General replacing Macario Peralta Jr. who resigned.

President Elpidio Quirino appointed Duque as acting Chief of Staff and sent Castañeda to the United States.

He died on November 24, 1972, in Quezon City and was buried at Libingan ng mga Bayani at Taguig, Rizal.