Knowledge management is considered as a way to well manage the intellectual capital of the company. The remarkable importance of knowledge management is reflected in the growing importance of its place in the world of economics. The objective of this paper is to study the impact of knowledge management on the different types of value creation such as economic, social, institutional and instrumental. To achieve this goal, we used a quantitative study of 35 Tunisian companies operating in different sectors. The empirical results of the exploratory analysis show that knowledge management has a significant impact on both economic value. On the contrary, it has a mixed impact on both social value.