It is commonly acknowledged that organizational culture is a valuable element of intellectual capital and as a hidden source of competitive advantage can considerably affect the achieving of strategic business goals. The axiological dimension of organizational culture is mostly identified with a set of shared assumptions and values, while its behavioral dimension is mainly defined by work practices. Both these dimensions influence, among others, the individual propensity to share knowledge which is crucial for the improvement of company performance. Knowledge sharing as a dynamic social process characterized by profound human interactions is determined by both organizational and individual factors. The links between them are worth exploring because of their importance for knowledge sharing. Knowledge sharing behavior is shaped by an organizational culture which creates an organizational context for social interactions. Among the individual factors, in turn, job satisfaction plays a key role. The willingness to share knowledge certainly depends on a subjective wellbeing that influences employees' commitment, loyalty, and trust necessary to achieve organizational goals. The aim of the article is to examine how job satisfaction influences the relationship between organizational culture, perceived through the prism of its dimensions, and knowledge sharing. For this purpose, a study among 910 Polish employees with different roles and experiences and across different industries has been conducted. The data were analyzed with a structural equation modeling method (SEM).