--- - |2 Abstract This study proposed that job crafting serves as a mechanism reflecting how proactive personality affects creative performance, and this study explored whether these relationships are moderated by high‐involvement work systems. Drawn from the conservation of resources theory to develop a cross‐level moderated mediation model, a three‐wave longitudinal study was conducted with 346 employees and their supervisors in 27 high technology firms in China. This study found that proactive personality was positively related to creative performance and that job crafting mediated the relationship between proactive personality and creative performance, and an indirect effect of proactive personality on creative performance through job crafting was significant when high‐involvement work systems was low but not high. Thus, the research results indicate that when human resource management involves less participatory management, incentive rewards, extensive training and information sharing, proactive employees can draw from their personality to craft their job tasks, relations and cognitions, thereby improving creative performance. The theoretical and managerial implications, limitations, and future research directions are discussed. - The Journal of Creative Behavior, EarlyView.