Don Mariano Marcos Memorial State University-Open University (DMMMSU-OU) is a renowned educational institution located in the bustling city of Catbangen, San Fernando, La Union. Established in 1981, DMMMSU-OU offers a wide range of degree programs, certificate courses, and diploma programs to cater to the diverse educational needs of its students. With a commitment to providing quality education, the university is dedicated to nurturing the academic, social, and personal growth of its students. DMMMSU-OU boasts state-of-the-art facilities, experienced faculty members, and a vibrant campus community that fosters a conducive learning environment.

As a pioneer in open and distance education in the Philippines, DMMMSU-OU provides flexible learning options for students who are unable to attend traditional classes. The university offers online courses, blended learning programs, and distance education opportunities to make education more accessible to everyone. With a strong focus on research, innovation, and community engagement, DMMMSU-OU is at the forefront of academic excellence and continuously strives to empower its students to become future leaders and changemakers in society.