Willamette University’s Greek community consists of five fraternities and three sororities which have national/international recognition. Beta Theta Pi, Kappa Sigma, Phi Delta Theta, Sigma Alpha Epsilon, and Sigma Chi fraternities and Alpha Chi Omega, Delta Gamma, and Pi Beta Phi sororities have on-campus housing facilities with University staffing.
All fraternities and sororities are represented through the Interfraternity and Panhellenic Councils respectively. Advising and program development for the Greek community is provided by the Office of Residence Life and the Office of Student Activities.