Soudan may refer to:

• The French name (and former English name) for the country of Sudan
• The French name for French Sudan (present-day Mali)
• Archaic spelling for the region of Sudan
• Soudan, Minnesota, an unincorporated town near Tower, Minnesota, USA
  • The Soudan Mine, a former iron mine, now part of a state park
  • Soudan 1 and Soudan 2, particle detectors located in the Soudan Mine

Communes in France

• Soudan, Loire-Atlantique
• Soudan, Deux-Sèvres

Surname

• Eugène Soudan, Belgian jurist and politician
• Mohamed Soudan, senior member of the Egyptian Muslim Brotherhood
• Tim Soudan, lacrosse coach and former player

• Union Nationale pour la Démocratie et le Progrès
• Union nationale pour l'Avenir de Monaco
• Union Nationale pour l'Indépendance
• Union nationale pour l’Avenir de Monaco
• Union Nationale pour l’Indépendance
• Union Nationale (Québec)
• Union Network International
• Union North
• Union north
• Union nouvelle et independante-syndicat universitaire
• Union nouvelle et indépendante-syndicat universitaire
• Union, Nova Scotia
• Union Now
• Union now with Britain
• Union Oberschoeneweide
• Union Oberschoneweide
• Union Obrera Democratica
• Union Observatory, Johannesburg
• Union of 17 October
• Union of Active Combat
• Union of Africa
• Union of Agricultural Work Committees
• Union of Albanian Working Youth
• Union of Allied Novelty and Production Workers
• Union of Arab Football Association