Knowledge is considered as the basis for developing sustained long-term competitive advantage for every organization. In the 21 st century every organization becomes knowledge based for the sustainable development. Knowledge sharing is an important instrument that turns individual knowledge into group organizational knowledge. It is one of the main knowledge processes in a present dynamic and competitive era for the development of organizations. The knowledge sharing practice plays a remarkable role in the development and innovation in many areas of organizations. In this paper an attempt has been taken to discuss techniques, barriers and benefits of knowledge sharing in organizations.Barriers are the hinder of flow of knowledge among employees in organizations. KS practices have not accomplished properly in many organizations due to possible KS barriers. Lack of trust is a significant barrier for KS in organizations. The influence of the organizational culture, lack of proper leadership, and lack of appropriate rewards in the organization are barriers of KS (Zawawi et al., 2011). Lack of communication, inequalities in status, lack of leadership and managerial direction, deficiency of sharing resources in organization, lack of formal and informal mechanisms and spaces to improve sharing activities, missing of sharing initiatives into the organization, deficiency of sharing resources, lack of proper space of KS, unwilling of sharing knowledge of highly skilled and experienced staff, and lack or an exiguity of network connections are barriers to organizational KS (Riege, 2005).Shortage of skilled personnel, finance, and information and communication technology are also barriers to KS in organizations. Most cases employees in organizations are reluctant to share knowledge among themselves because of lack of time and effort to KS, lack of motivation and credibility, fear of one's KS may lessen job security, poor evaluations by the receiving unit, differences in education levels, and lack of social network (Chiu et al.