Paciano Tangco (March 9, 1892 – 1946) was a Filipino military officer who served as the Chief of the Signal Corps.

He was assigned throughout the country in the provinces of Antique, Bataan, Cavite, Manila, Nueva Ecija, Pangasinan, Pampanga, Tarlac, Cotabato, Lanao, Zamboanga, and Sulu in various roles.

[1] In the early 1930s, as a Major, Tangco attempted to provide signal communications for the Armed Forces of the Philippines.

[2] In 1937, a Philippine Army plucking board had recommended Tangco for retirement on the grounds that as a Constabulary officer he sought to secure a promotion through the influence of politicians.

Eisenhower reasoned that political favoritism was accepted "almost as a matter of course" and that singling out Tangco was unfair.