The Mont Blanc massif is a mountain range in the Alps, located mostly in France and Italy, but also straddling Switzerland at its northeastern end. It contains eleven major independent summits, each over 4,000 metres (13,123 ft) in height. It is named after Mont Blanc, the highest point in western Europe and the European Union. Because of its considerable overall altitude, a large proportion of the massif is covered by glaciers, which include the Mer de Glace and the Miage Glacier – the longest glaciers in France and Italy, respectively.

Mont Blanc is the highest mountain in the Alps and Western Europe, and the highest mountain in Europe outside the Caucasus mountains, rising 4,805.59 m (15,766 ft) above sea level, located on the French-Italian border. It is the second-most prominent mountain in Europe, after Mount Elbrus, and the 11th most prominent mountain in the world.