The study aims to investigate the impact of knowledge sharing (KS) on employees’ innovative work behavior. To conduct this research, 90 respondents from 4 private universities of the Sylhet region of Bangladesh were surveyed conveniently through a structured questionnaire; then the responses were analyzed by conducting correlation and regression analysis using SPSS software to test the hypotheses. Correlation analysis reveals that the two dimensions of knowledge sharing i.e., knowledge donation, and knowledge collection has a significant and positive relationship with the innovative work behavior of faculty members, besides regression analysis shows that the two dimensions of knowledge sharing depicted in the model explain about 34 percent of innovative work behavior among the academics of private universities. It has also been found that knowledge collection (KC) has comparatively more influence on employee’s innovative work behavior (IWB) than knowledge donation (KD). Therefore, findings of this study have significant implications to the university authority to ensure sustainable competitive advantage over rivals through academics’ innovative work behavior by cultivating a knowledge sharing culture among their institutions.