One of the most influential organizations, which played an outstanding role in the facilitation of the internal conflict in Tajikistan is the UN. The UN started cooperation with Tajikistan after it gained its membership in the sphere of resolution of the internal conflict.In 1992 as the response to the request of the government of Tajikistan there was created UN Mission, which conducted a great deal of work in Tajikistan and as a result recommended that UN should launch the peacekeeping operation.The Tajik government has also initiated the UN Observer Mission sent to Tajikistan to facilitate the contacts with the government of this country and to control the issues related to humanitarian aid provided by the UN. This mission was very important for the relief of tensions inside of the Tajikistan.It is necessary to mention that UN agencies also played a significant role in resolution of the conflict: UNHCR, UNDP, UNESCO, UNCF and others. Apart from this the UN actively employed in Tajikistan post-conflict peace building measures.Today Tajikistan is on the way to peace. The Bureau for facilitation of peace-building in Tajikistan which replaced UN Observer Mission plays leading role in a wide range of post-conflict measures taken in Tajikistan. It is evident that UN efforts in this country had proved effective and successful.