IUG may stand for:

• the International University in Geneva, a private University in Switzerland
• the Islamic University of Gaza
• an institute of the University of Bamako
• the Innovative Users Group, a library interest group
• an institute of the University of Grenoble-Alpes in France

• 1824 elections
• 1824 in birding and ornithology
• 1824 in France
• 1824 in India
• 1824 in Norway
• 1824 in paleontology
• 1824 in sports
• 1824 New York gubernatorial election
• 1824 United States House of Representatives elections in New York
• 1824 United States Presidential Election
• 1824 United States presidential election in Missouri
• 1825/1826 United States Senate election in New York
• 1825 AHS
• 1825 in birding and ornithology
• 1825 in France
• 1825 in Ireland
• 1825 in Norway
• 1825 in paleontology
• 1825 in sports
• 1825 Klare
• 1825 Santa Ana hurricane
• 18263 Anchialos
• 18268 Dardanos
• 182699-77-0
• 1826 AHS