In its trajectory as a scientific field, the peace research recognizes that defining “peace” is, in fact, an important part of the scientific strategy. Thus, the field has been dedicated to conceptualizing peace in a broad, dialogic, and complex manner, as complex and diverse as the world is. Likewise, conceptualizing violence is an intricate task since, more important than reaching a definition or typologies – as there is, obviously, many types of violence –, indicating theoretically significant dimensions of violence is essential, as it leads us to thinking, researching, and potentially acting on the most serious problems of Mankind. If the peace action must be considered because it is an action against violence, then the concept of violence must be broad enough to cover the most significant varieties and, in addition, must be specific enough to serve as a basis for concrete action. Given this perspective, this article aims at presenting a theoretical-conceptual reflection about peace and violence in the context of the critical perspective of peace studies.