The university is home to three fraternities and four sororities including Alpha Chi Omega, Alpha Phi, Gamma Phi Beta, Phi Mu sororities; Kappa Sigma, Lambda Chi Alpha, Phi Gamma Delta fraternities. OCU is also home to many other non-traditional Greek organizations such as two National Interfraternity Music Council organizations, Sigma Alpha Iota and Phi Mu Alpha Sinfonia; One local Christian fraternity, Delta Alpha Chi; and Kappa Phi, a national Christian women's organization. OCU also has numerous chapters of professional and academic honor fraternities such as Phi Alpha Delta, a professional law fraternity; Sigma Tau Delta, the international English honor society; and the original chapter of Beta Beta Beta, the national biological honor society.[40]