Despite some efforts by the government, corporate bodies, civil society, national universities commission etc to reduce situations of conflict in Nigeria, peace is still elusive to her and consequently to sustainable development. This paper thus aims at an in-dept description of NGOs, conflict and peace building and proffering a way forward to reduce conflict situations through NGOs. Content analysis, was adopted, using the secondary sources of collecting data from books, journals and articles. NGOs are an aspect of civil society, without government representation, embarking in conflict reduction, welfare scheme, empowerment and employment. Among the recommendations are: government recognition and support of NGOs; NGOs increased and effective performance and government/NGOs partnership in peace and conflict issues.