This research aimed to investigate the impact of social commerce on online purchase intention. The mediation role of trust in social network sites between social commerce and online purchase intention was explored. Dataset obtained from 467 Jordanian users of social network sites. PLS-SEM was conducted for analysis purposes. The findings reveal that social commerce and trust in social network sites directly affect online purchase intention. The findings have additionally shown that trust in social network sites has a mediating role between social commerce and online purchase intention. The main recommendation to companies is to derive significant benefits from social commerce and consider them to maximize the potential level of online purchases. Suggestions for further studies are mentioned at the end of the study.