Several UN agents are operating in Sudan such as the World Food Program (WFP); the Food and Agriculture Organization of the United Nation (FAO); the United Nations Development Program (UNDP); the United Nations Industrial Development Organizations (UNIDO); the United Nations Children Fund (UNICEF); Doctors Without Borders (DWB);the United Nations High Commissioner for Refugees (UNHCR); the United Nations Mine Service (UNMAS), the United Nations Office for the Coordination of Humanitarian Affairs (OCHA) and the World Bank. Also present is the Intergovernmental Organization for Migration (IOM);..
Since Sudan has experienced civil war for many years, many Non-Governmental Organisations (NGOs) are also involved in humanitarian efforts to help internally displaced people. The NGOs are working in every corner of Sudan, especially in the southern part and western parts. During the civil war, international nongovernmental organizations such as the Red Cross were operating mostly in the south but based in the capital Khartoum. The attention of NGOs shifted shortly after the war broke out in the western part of the Sudan known as Darfur. The most visible organization in South Sudan is the Operation Lifeline Sudan (OLS) consortium.
Even though most of the international organizations are substantially concentrated in both South Sudan and Darfur region, some of them are working in the northern part as well. For example theUnited Nations Industrial Development Organization is successfully operating in Khartoum, the capital. It is mainly funded by the European Union and recently opened more vocational training. The Canadian International Development Agency is operating largely in the northern Sudan.
Info from https://en.wikipedia.org/wiki/Sudan