Business—or the sum of privately run enterprises in all sectors of the economy, their owners, and managers—can have an important impact on the holding of peace talks, on agreement substance, and on the speed and depth of implementation. In fact, business has been part of peacebuilding processes in many conflict-affected societies in Latin America, both by spoiling ongoing efforts and by supporting negotiations, social dialogue, and transformative projects. The examples of El Salvador, Guatemala, and Colombia show that there is not a uniform model whereby private sector actors define their interests and strategies in relation to peace talks and peacebuilding processes. Rather, factors related to the nature and intensity of conflict, the economic and international context, company traits and private sector organizational forms, as well as access to the policymaking process play an important role. Whether peace is achieved or not ultimately depends on a variety of factors. However, whether as spoiler, supporter, or simple bystander, the private sector is a crucial actor in societies seeking to build lasting peace.