Since the 1990’s manufacturing industries worldwide undergo colossal change, adding service-based advantages to manufacturers offers to increase competitiveness and revenues.The concept of product-service system (PSS) has been proposed by several authors as a possible strategy to both increase industries’ competitiveness while addressing sustainability challenges. A PSS can be described as a market proposition that increases the value of a product by adding additional services. The present research paper aims to contribute to the current understanding of the PSS field by identifying and visualizing the intellectual structure of the literature on PSS, thus providing a perspective of how the field has evolved. A co-citation analysis was performed.Through its results it was possible to identify that the PSS theory was supported by  an integrated approach of the servitization concept (VANDERMERWE; RADA, 1988) and the service-dominant logic (VARGO; LUSCH, 2004, 2008). It is also possible to observe that as the PSS research field evolved in the development of its theoretization, methodologies and tools, disciplines such as Engineering and Design played an important role.  The bibliometric analysis conducted in this study allowed the representation of the intellectual structure of the PSS research field, and to our knowledge this is the first study of this theme to present such analysis