<p>As social media becomes an increasingly dominant space for communication, understanding the factors associated with misogynistic behavior online is essential. This study examines how exposure to sexist content on social media is associated with traditional masculine norms and online misogynistic behavior, while considering the moderating role of relational empathy. Using a sample of male social media users from Pakistan (<i>N</i> = 902), the study integrates social cognitive theory and the empathy-altruism hypothesis to test direct associations, the indirect association through masculine norm endorsement, and the moderating role of relational empathy using structural equation modeling. Greater exposure to sexist content was associated with greater engagement in online misogynistic behavior and stronger endorsement of masculine norms. Masculine norm endorsement was also associated with higher levels of misogynistic behavior and significantly accounted for part of the association between sexist content exposure and online misogynistic behavior. Relational empathy moderated both the association between sexist content exposure and masculine norm endorsement and the association between masculine norm endorsement and online misogynistic behavior, such that both associations were weaker among men with higher relational empathy. These findings indicate that relational empathy may attenuate the strength of the associations linking sexist-content exposure, masculine norm endorsement, and online misogynistic behavior, although higher relational empathy was not associated with uniformly lower predicted outcome levels.</p>