Today, green human resource management (GHRM) has become a key business strategy where HRM plays an active role in the ongoing green movement. Thus, the topic of GHRM is of growing interest among management scholars. However, despite the theoretically important role of GHRM, relatively small number of research has been discovered so far about how GHRM, in companies striving to achieve environmental sustainability, could help them gain a green competitive advantage (GCA). Thus, based on the resource-based view (RBV) arguments, the main objective of this paper is to develop a conceptual model of the relationship between GHRM and green competitive advantage through green knowledge, green values, and green commitment. This model is expected to provide a strategic map that could be utilized by the practitioners and managers so that GHRM implementation can be more effective in contributing to green competitive advantage. Overall, the present article extends knowledge on the resource-based view by contributing to the literature on GHRM and its interactions with the main assets that lead to green competitive advantage.