There is a lack of research exploring dyad communication and knowledge management in the complex project context. The present study aims to narrow the identified gap by identifying the main barriers, considering both tacit and explicit knowledge. Besides, the influence of this dyad in project performance is investigated. This research explores the emergent literature on knowledge management and communication management in the complex project context by performing a mapping study. A sample of 116 article is in-depth analyzed through a combination of bibliometric and content analysis, using an axial coding process. The results point out that the main communication barriers are environmental and different priorities among team members. The study points the knowledge barriers, particularly the knowledge codification process and inadequate information technology. This study highlights the lack of more confirmatory research approaches, such as developing a relation between triad knowledge management, communication, and project performance. Besides, it points to the lack of studies on learning capabilities.