This study tested the relationship between sexual assault victimization, sorority membership, and participation in a range of sorority activities, using data from a large-sample (N = 779) survey conducted at a mid-size public university. 28.9% of sorority women reported having been sexually assaulted while in college, nearly four times the rate (6.8%) among non-sorority members. The difference between Greek and non-Greek women remained large even when controls were included for alcohol consumption and attendance at Greek parties where alcohol is served. Among sorority members, participation in social events not involving alcohol correlated negatively with sexual assault, indicating a possible protective effect.