- United Nations Volunteers (UNV) contributes to peace and development through volunteerism worldwide. UNV works with partners to integrate qualified, highly motivated and well-supported UN Volunteers into development programming and promote the value and global recognition of volunteerism. UNV is active in around 170 countries every year. With field presences in over 60 countries, UNV is represented worldwide. UNV is administered by the United Nations Development Programme (UNDP).