Transparency has been a desire of democratic societies for a long time. The right to be informed and have access to information has been a major problem in modern societies. The demand for truth based on transparency has increased in the context of global change. The importance of openness in the flow of information is creating an open society in which the very idea is to establish a democratic society with engaged citizens able to understand and use the information that is accessible to them (Holzner, 2006). However, it is not sufficient for an organization to wish to be transparent. Organizations need to know what transparency is and how they can apply this concept to their business. This thesis defines transparency and a way of using it in business processes, using these processes as a means of making explicit the transparency within organizations. An aspect oriented approach is proposed in order to allow the introduction of transparency characteristics into business processes. Policies and standards are proposed as well as a technique for inserting new elements into the business processes using a transparency catalog. In order to validate the proposed definition of transparency, an analysis of organizational processes, using two surveys, was performed. A case study, using the business processes from of a real organization, was performed to validate the proposed approach. This case study produced some preliminary results on the applicability and feasibility of using this approach.