Sigma (Tulane University) Sigma-Alpha (Trinity College) Sigma-Beta (Oglethorpe University) Sigma-Delta (Stony Brook University) Sigma-Epsilon (Hunter College) Sigma-Eta (Central Michigan University) Sigma-Gamma (Henderson State University) Sigma-Iota (St. Norbert College) Sigma-Kappa (Grand Valley State University) Sigma-Lambda (Christopher Newport University) Sigma-Mu (Colorado Mesa University) Sigma-Nu (Binghamton University) Sigma-Omega (Santa Clara University) Sigma-Omicron (Furman University) Sigma-Phi (Campbell University) Sigma-Pi (University at Albany- SUNY) Sigma-Psi (Catholic University of America) Sigma-Rho (SIU - Edwardsville) Sigma-Sigma (Minnesota State University Moorhead) Sigma-Tau (Western Oregon University) Sigma-Theta (Old Dominion University) Sigma-Upsilon (University of California Riverside) Sigma-Xi (University of West Florida) Sigma-Zeta (Northwood University)