As a key concept in modern management, the knowledge management among the knowledge administration, development and transfer between the members of an organization, it also involves the knowledge stimulation to obtain the competitive advantage and the innovations. The association between communication and knowledge is normal; the knowledge without communication is sterile, even useless. The communication’s role in the knowledge management is both normal and valuable, because the knowledge, which is a good value, must be transferred so it can be exploited to maximum, and the knowledge transfer is possible only through communication. The managerial decisions, strategies, plans, explanations must be communicated to the organization’s members so they know how, where and why it must be acted to assure its success. In turn, the organization’s members hold a personal luggage of knowledge that can be developed and putted in the interests of the organization so it can become a collective source that generates new values. The present article presents the results of a research that had as purpose to identify in which way the communication is used to implement the knowledge management.