A student­ friendly office that provides a safe space which enables and empowers the students in systematic, transparent and efficient formation and individual development.


To serve as the central coordinating body of university- ­wide student activities which promote and enhance the academic development and social well ­being of the students.

The Office of Student Activities' creation was approved during the 1069th Meeting of the Board of Regents held on 28 July 1993. OSA is a merger of the previous Student Activity Center (SAC) and the International Students Program (ISP).
The Student Activity Center then became the current General Students Program or GSP. Through the GSP, OSA attends to the concerns of all students regarding Student Activities, Organizations, Student Leadership...
OSA currently attends to 200 University-registered Student Organizations, the University Student Council Elections and the Philippine Collegian Editorial Exam.
Through the International Students Program, the OSA attends to the concerns of international students enrolled in UP Diliman, regarding admission, visas, and study permits. OSA keeps track of their academic progress through the, required submission of grades every semester.
Currently OSA attends to about 220 international students from 20 countries enrolled in UP Diliman. However, with UP's efforts (to be globally competitive) through new partnerships with other International Universities, ISP expects an increase in International Students.
  • 1959 - The International Students Program was established and was under the Office of the Foreign Student Adviser.
  • 1968 - The first full-time adviser was assigned as part of the Division of Counseling and Guidance.
  • 1972 - The first full-time director of the international Students Program under the Office of the Dean for Student Affairs was appointed.
  • 1990 - The Student Activities Center was established , as a major service of the Office of Counseling and Guidance, and was headed by a Coordinator. It was conceived and nurtured by Prof. Luis Beltran and later by Prof. Oscar L. Evangelista.
  • July 28, 1993 - The Board of Regents, in its 1069th meeting, approved the creation of the Office of Student Activities out of the merger of the Student Activities Center (SAC) and the International Students Program (ISP), and the assignment of the administration of the University Student Council (USC) elections and the Philippine Collegian test. It serves as the central planning and coordinating body for university – wide student activities in UP Diliman in order to enhance the academic and social well-being of the students. It has two-pronged-programs: one for the general studentry and another for foreign students.

Asst. Prof. Ma. Althea T. Enriquez, PhD.

2014 - Present

Asst. Prof. Rommel B. Rodriguez, PhD.

2011 - 2014

Prof. Oscar P. Ferrer, PhD.

2007 - 2011

Ms. Belina T. Cuevas, Ed.D., RGC

2006 - 2007

Ms. Rosalinda C. De Mesa, Ph.D., RGC

2001 - 2006

Ms. Alma G. Tirona

1997 - 2001

Ms. Rosalinda C. De Mesa, Ph.D., RGC

1994 - 1997

  • To plan and organize programs and activities for students to enhance their academic and social well being (e.g. lectures/seminar-workshops on study habits, stress management, value orientation, rights and obligations of students, leadership training, sports tournaments, concerts, community projects, etc.;
  • To oversee and coordinate activities undertaken by university organizations, including the University Student Council elections and Philippine Collegian Editorial Exam;
  • To process applications for registration filed by university-registered student organizations, sororities and fraternities;
  • To facilitate communication between the OVCSA and student organizations, sororities and fraternities;
  • To serve as liason between the University and outside groups requesting for UP student participation;
  • To assist the Inter-Fraternity Council in the mediation function and projects; and
  • To assist the Inter-Sorority Council in its projects for women.
  1. Processes applications for Student Organization’s University Registration
  2. Evaluate the previous year’s activity Evaluate the proposed calendar of activities for the incoming academic year Monitor the number of membership Interview the head and other officers of the organization Issues certificate of Registration; and Prepare the list of registered student organizations Processes applications for and awards tambayans;
  3. Facilitates meetings/ joint activities/ exchange of ideas among student organizations;
  4. Endorses requests for funding and use of University Facilities;
  5. Approves posting of activity/promo materials;
  6. Disseminates information on student activities, wards, contests; and
  7. Provides administrative support to the Philippine Collegian Editorial Examination and the University Student Council Elections.

OSA-26Dr. Ma. Althea T. Enriquez

DFPPL, College of Arts and Letters

OSA-17-683x1024Ms. Ester M. Mendoza

Admin Aide VI

Room 1 , 09192919554

maki1Ms. Regienna Mariella "Maki" C. De Jesus

Admin Aide IV

Room 4

OSA-19-683x1024Mr. Angelo "Angel" A. Tobias

Admin Aide III

Front Desk , 981-8671

Research and Extension

OSA-14-683x1024 Ms. Ma. April "April" L. Estanes

Researcher II- Room 3


OSA-22-683x1024Ms. aLyn M. Silarde

Extension Associate II - Room 2


Gawad Paglilingkod Awardees

Estanes, Maria April

(5 years of service)

Silarde, aLyn

(5 years of Service)