Melecio Arranz y Alivin (May 24, 1888[1] – April 24, 1966) was a Filipino politician and engineer, born in Alcala, Cagayan.

He obtained his degree of Bachelor of Arts from Colegio de San Albero Magno and his Bachelor of Science in Civil Engineering from the University of Santo Tomas.

[2] As Senator, he was elected in 1928 representing the First Senatorial District comprising Cagayan, Isabela, Ilocos Norte, Ilocos Sur and Abra.

He was floor leader and Chairman of the Committee on Public Works and Communications (1936) and floor leader and Senate President Pro-Tempore (1946–1949).

[1] In 1947, he was appointed Chief Delegate of the Philippines to the United Nations Commission on Korea.