The UPLB Mathematical Sciences Society (UPLB MASS) is a duly recognized academic and youth-serving organization of University of the Philippines Los Baños (UPLB) and National Youth Commission (NYC), respectively. The society is composed of UPLB students pursuing either BS Applied Mathematics, BS Computer Science, BS Mathematics, BS MST (Major in Mathematics) or BS Statistics. This organization aims to promote deeper appreciation and wider application of Mathematical Sciences in order to contribute to the development of the Filipino nation. In line with these objectives, the organization facilitates various activities including tutorial sessions, outreach programs, seminars, and quiz contests.

The Mathematical Sciences Week (MSW) is an annual week-long event that incorporates and highlights the importance of the Mathematical Sciences in different aspects of everyday life. Some of the activities held during MSW include the Southern Tagalog Invitational Mathematical Challenge, the Annual Search for the UPLB Math Wizard, Teachers’ Seminar, Research Contest, and Poster-making Contest.