Founded in 1918, Upsilon Sigma Phi (ΥΣΦ) is the oldest fraternity in Asia.
Based in the University of the Philippines, it has had an unbroken and singular association with the premier state university.

It currently has two chapters — a combined UP Diliman/UP Manila chapter and a second one in UP Los Banos.

From the start and through its 100 years of existence, Upsilonians took it upon themselves to continue the tradition of excellence and leadership that the university was founded on.

Celebrating its 100th year, the members of Upsilon Sigma Phi honor its long history and look forward to upholding its legacy by continuing to scatter its light to the nation.



Upsilon Sigma Phi Honors 2019 UNO Awardees

The UPSILON SIGMA PHI HONORS 2019 UNO AWARDEES. The Upsilon Sigma Phi Alumni Association bestowed its Upsilonian Noble & Outstanding (UNO) award on eight Upsilonians at its 17th Biennial Congress

Upsilon Elects Trustees for 2019-2020

The Upsilon Sigma Phi Alumni Association is pleased to announce the election of the following fellows as members of the Board of Trustees for 2019-2020 in its recently held 17th

Bangkaw sa Mindanaw: Success!

By Gian Carlo de Jesus ‘15 Six destinations, 1345 kms of Brotherhood… Upsilon Sigma Phi, the oldest fraternity in Asia, celebrated its one hundred years of existence by circumnavigating Mindanao

100 Novembers: The U.P. Promenade Inauguration Night

by Dr. Alan Gerard D. Austriaco ‘86 Fellowship of Light. These words took on new meaning last November 15 when beams of light illuminated the Diliman sky as the Upsilon

Thousands of Upsilonians Celebrate Centennial

By Noy Dy-Liacco ‘65 - Chairman of the Upsilon Sigma Phi Centennial Commission 18 November 2018 - Tonight, Upsilonians from around the world celebrate the 100th year of Upsilon Sigma Phi

Towards the next 100 years! Quo Vadis?

Excellence has always been the driving force of the Upsilon Sigma Phi according   to former UP President Fred Pascual and now Chairman of the Upsilon Sigma Phi Alumni Association

Duterte Recognizes UP Frat, Hails its Dedication to Nation-building’

MANILA -- Malacanang has issued Proclamation Order No. 539 recognizing the Upsilon Sigma Phi, the oldest student organization in the University of the Philippines, and declaring 2018 as “year for

Upsilon Cares…

Upsilon Cares… For Health and the Environment. Upon its conception, Upsilon Cares evolved to different outreach programs from medical and legal missions to tree planting and growing activities. Last September

The modern history of the Philippines is deeply tied to that of its state university, the University of the Philippines; and the history of the University is intricately entwined with that of its oldest and most prestigious student organization: the Upsilon Sigma Phi.

No complete story of my country can be written without touching on the crucial roles that the University of the Philippines and the Upsilon Sigma Phi have played in shaping the Philippines – for both the University of the Philippines and the Upsilon Sigma Phi were committed to using the gift of knowledge to serve and transform society.

Born from just a few years apart, they were there when the Filipino people strove to build the key pillars of a sovereign nation. They helped draft the fundamental document that enshrined our deepest values and hopes for the future as a democratic country.

Today they stand boldly on the vast frontiers of a profoundly changed world, of a deeply transformed nation. And I am sure they will do the university and the fraternity proud.

Ponciano G.A. Mathay ’48
Upsilon Sigma Phi
Illustrious Fellow, 1952