Sigma Delta Phi

Sigma Delta Phi, commonly known as Sphinx, was founded by five men as an "underground" fraternity in 1919, when Greek organizations were still banned from campus. Today, Otterbein has six local sororities, six local fraternities, two national fraternities, and two National Pan-Hellenic Council (NPHC) chapters. Only upperclassmen may reside in Greek housing, provided that all other eligibility requirements of Otterbein and the given organization are met.