This paper looks at the impact of the Guatemalan Peace Accords of 1996 on the work of International Non-Governmental Organizations (INGOs). In particular, the paper focuses on changes in INGO organizational structure, programming priorities, and relationships with the Government of Guatemala and local counterparts between 1993 and 2000. It is shown that the peacetime atmosphere has vastly improved INGO capacity to work in Guatemala, and that continued success depends on INGO adaptation to the new opening, governmental commitment to the Peace Accords, and increased INGO willingness to cooperate on large-scale, integrated projects.