This study examines the mediating effect of affective commitment between job crafting, appreciative leadership and workplace belongingness. The research framework of this study is developed under the norms of belongingness theory. Self-administered questionnaires are distributed to the faculty members in the universities of Thailand. A total of 390 questionnaires were used to analyze the data. In this survey study, the response rate is of 71%. This study utilizes the partial least squares structural equation modeling (PLS-SEM) to analyze and establish the reliability and validity of the measurement model and to investigate the relationships of the structural model. The findings of this study show that the direct effect of job crafting and appreciative leadership on workplace belongingness is significant. Further, the direct effect of job crafting and appreciative leadership on affective commitment is also significant. Similarly, the direct effect of affective commitment on workplace belongingness is significant. The mediating effect of affective commitment with job crafting, appreciative leadership and workplace belongingness are significant, and these are partially mediated.