Organizational innovation (OI) is one of the key drivers of productivity. It is regarded as the major source of wealth creation and competitive advantage. In an increasingly competitive global economy, organizational innovation is crucial in efficiency savings and helping create conditions conducive for economic success. Papua New Guinea Public Sector is the key implementer of government agendas and policies and organizational innovation is crucial for its success. This study investigates the quantitative relationship among organizational commitment (OC), organizational citizenship behavior (OCB) and knowledge sharing (KS) on OI. The research model was empirically tested using Statistical Package for the Social Sciences (SPSS) and the results revealed that organizational commitment and organizational citizenship behavior positively influenced knowledge sharing and organizational innovation. Furthermore, knowledge sharing partially mediated the relationship of organizational commitment and organizational citizenship behavior with organizational innovation. Based on these results, a number theoretical and practical implications are discussed, and suggestions for further research are presented.

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