Have you ever wondered what UNO full form is, especially when you see it mentioned in your school books, news headlines, or competitive exams? The acronym " UNO " stands for a major international group that affects nearly every country in the world. The full form of UNO is the United Nations Organisation , and it serves as a discussion forum to debate issues concerning all of humanity. Learn more about UNO on Unacademy. What does UNO mean? The United Nations (UN) is an international organization whose stated aims are facilitating cooperation in international law, international security, economic development, social progress, human rights, and achievement of world peace. UNO is the abbreviation that stands for “ United Nations Organisation .” The organisation was established in 1945, after the Second World War.