Purpose <p>Cross-sectional studies consistently linked jealousy to IPV perpetration among emerging adults. However, it is unclear whether jealousy is a <i>proximal</i> antecedent to IPV incidents that should be targeted in IPV interventions for emerging adults. The present study tested the hypothesis that the likelihood of IPV (cyber, psychological, physical, and sexual) perpetration would increase as levels of daily jealousy increased.</p> Methods <p>College students (<i>N</i> = 236; <i>M</i>_age = 20.53 years) completed a baseline questionnaire that assessed demographic variables and perceived partner infidelity after which they completed once-daily surveys on IPV perpetration, jealousy, and alcohol use for 60 consecutive days.</p> Results <p>Controlling for sex assigned at birth, perceived partner infidelity, and daily alcohol use, multilevel modeling results revealed that college students were more likely to perpetrate cyber, psychological, and sexual IPV on a given day if they experienced high levels of jealousy. Greater perceived partner infidelity at baseline positively related to odds of cyber and psychological IPV perpetration. Daily alcohol use did not significantly associate with sexual IPV perpetration odds, and negatively associated with cyber and psychological IPV perpetration odds. Physical IPV occurred too infrequently to derive reliable model parameters.</p> Conclusions <p>Results underscore the need to target jealousy in IPV interventions for emerging adults.</p>