The most common point of intervention within campus sexual assault programming is that of combatting frequently held myths about rape. These rape myths are often assessed through self-report scales and are thus subjected to concerns of social-desirability and blind-spot bias. Research suggests individuals misperceive the beliefs of others, resulting in the perpetuation of a false norm. Further, research on perceived norms of sexually aggressive behavior is limited and focuses on male perceptions. This study examines the potential inter and intra-gender misperceptions of rape myths among male and female undergraduates, using archival data from a campus climate survey distributed to IUP students in the spring semester of 2018. Participants completed self-report rape myth items (RMS) and then responded to the same items as they perceive their male peers (RMM) and female peers (RMF) would respond. A factor analysis was conducted to identify components within the rape myth items, and mean comparisons examined differences between RMS, RMM and RMF statements. Results indicated that males had higher RMS scores compared to females. Additionally, participants endorsed higher rape myth perceptions of males than for females or for themselves. Female participants also endorsed higher rape myth perceptions of other females compared to themselves, but no difference was found in male self-reported rape myth endorsement compared to their perception of female endorsement. Overall, results suggested males endorsed more rape myths than females and that people tended to endorse fewer rape myths than they presumed other people of their gender would. Both males and females also appeared to perceive men as likely to endorse more rape myths than women. Exploratory analysis examined broader trends of rape myth norms among particular campus groups, and future directions are discussed. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]