Archived data was utilized for the present study which examined self-injurious behaviors in a college population. College students, who engage in non-suicidal self-injury, or NSSI, were expected to evidence a higher knowledge base for the behavior than those who do not. The demographic variables of gender and sexual orientation were predicted to be over represented in the NSSI group. Further, this study examines the perceived riskiness of the behavior in individuals who self-injure, as well as their perceptions of others who engage in NSSI. The survey consisted of four sections: demographics, knowledge ofNSSI, experience with NSSI, and perceptions ofNSSI. Individuals who engage in or have a history of NSSI evidence a higher mean score or better knowledge of the behavior than those who do not. The NSSI population evidences disproportionate numbers of females and individuals with gay, lesbian, and questioning sexual orientations. Further, when examining the perceived riskiness of self-injury, the NSSI group views the behavior as less risky than the non self-injury group. Results are discussed in relation to the need for accurate knowledge about NSSI and additional research directions.