Use of pornography is common among adolescents and young adults, with most men and a growing number of women viewing regularly. A vast body of research suggests pornography use is associated with multiple attitudinal and behavioral variables. One of those associations, for both men and women, is higher pornography use is correlated with a lower likelihood of intervening to prevent sexual assault. The present study explored how motives for viewing pornography related to male (n = 139) and female (n = 290) college students’ willingness and efficacy to intervene to help prevent a sexual assault from occurring. We found that several motivations to view pornography were associated with suppression of willingness to intervene as a bystander, even after controlling for frequency of pornography use. This study joins others in suggesting an association between pornography use and callousness toward sexual violence.