Don Mariano Marcos Memorial State University (DMMMSU) is the lone State University in La Union, Philippines.

Sprawled on a 1,120–hectare land area, DMMMSU was created through Presidential Decree 1778 on January 15, 1981, by Former President Ferdinand E. Marcos. Founded on the philosophy of “total human development with appropriate competencies,” DMMMSU was born from the merging of five (5) former schools in La Union, namely:

•        Don Mariano Marcos Memorial State College at Bacnotan;

•        La Union School of Arts and Trade at the City of San Fernando;

•        Community College of La Union at the City of San Fernando;

•        Southern Ilocos Polytechnic State College at Agoo; and

•        Sapilang Elementary School at Bacnotan.

Helping transform lives and communities through high-quality education, DMMMSU maintains three major campuses: the North La Union Campus in Bacnotan, the Mid La Union Campus in San Fernando City, and the South La Union Campus, which is spread in the towns of Agoo, Sto. Tomas, and Rosario, La Union. DMMMSU also houses the Open University System that caters to the needs of lifelong learners as well as learners with disabilities, OFWs, working students, and solo parents, among others.