The Upsilon Sigma Phi (ΥΣΦ) is the oldest Greek-letter organization and fraternity in Asia. It is the first student organization in the University of the Philippines, and it has been in operation since its founding in 1918. The following is a list of notable members of Upsilon Sigma Phi, the oldest Greek-letter fraternity in Asia.(This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by adding missing items with reliable sources.)