This study evaluated the rape fantasies of a female undergraduate sample (N = 355) using a sexual fantasy checklist, a sexual fantasy log, a rape fantasy scenario presentation, and measures of personality. Results indicated that 62% of women have had a rape fantasy. For these women, the median rape fantasy frequency was about four times per year, with 14% of participants reporting that they had rape fantasies at least once a week. Further, rape fantasies exist on a continuum between erotic and aversive, with 9% completely aversive, 45% completely erotic, and 46% both erotic and aversive. Women who are more erotophilic, open to fantasy, and higher in self-esteem tended to have more frequent and erotic rape fantasies than other women. The major theories that have been proposed to explain why women have rape fantasies were tested. Results indicated that sexual blame avoidance and ovulation theories were not supported. Openness to sexuality, sexual desirability, and sympathetic activation theories received partial support.