This Masters thesis explores burnout syndrome in nonviolent activists, focusing mainly in its psychosocial dynamic. It does so by correlating the theories of strategic nonviolent action and diverse psychological paradigms. A gender sensitive perspective is maintained throughout the research, providing necessary criticism to a subject matter that is yet not entirely understood. Usually, burnout research studies the ?who” of the syndrome. That is, the intrinsic characteristic of the individual that is affected. In the context of nonviolent resistance, asking for the ?what” makes more sense. Congruently, this research covers the elements that are causing burnout at the individual, interpersonal, and institutional levels: common stressors, risky environments, idealism, strategic planning, sanctions, and trauma. Although it is not possible to reach absolute conclusions regarding the consequences that burnout might generate in nonviolent movements, it is possible to infer that the effectiveness of a movement is in part due to the psychological wellbeing of the men and women that work for it. Therefore, the value of psychosocial support groups is a relevant part of any movement’s organizational framework. After providing an analysis of the current theoretical understanding of nonviolence and other disciplines, a burnout measurement instrument was designed for both institutional predisposing factors and activist burnout. These instruments intend to measure the impact of burnout in nonviolent action settings, taking into account that traditional burnout scales are designed for people-work professions. Subsequently, a group of nonviolent activists was evaluated on their subjective burnout experience, that was later contrasted with the characteristics of the organization they work for. This research arrives to the conclusion that there are sufficient reasons to believe that burnout might be causing or aggravating factors that nonviolent action literature considers negative for the adequate functioning of any nonviolent struggle. Further research is considered necessary to analyze this phenomenon in a wider sample, as well as in a case to case basis.