Hangar à bananes, Former banana warehouse on Île de Nantes, France.

The Hangar à Bananes is the former hangar 21 of the Nantes-Saint-Nazaire port, also called hangar Maurice-Bertin, on the western tip of Île de Nantes between the quai des Antilles and the boulevard des Antilles. Rebuilt in 1949, it is over 150 m long, 50 m wide and 6.5 m high, with about 8,000 m² of floor space. Its long white facade is divided into bays by vertical supports, each holding large glass doors or windows, some recessed under dark overhangs.

The first hangar was built in 1901 and became a banana ripening house in 1929, receiving early shipments from the Canary Islands. Allied bombing on 23 September 1943 destroyed it, and the Chamber of Commerce rebuilt it in 1949 as a 150 m long, 50 m wide, 6.5 m high warehouse of about 8,000 m2. Banana traffic ended before 1975, after which the site stored sugar for the Béghin-Say refinery.

The name comes from the bananas that ripened here until the early 1970s; the preserved pediment carries the name of Maurice Bertin, president of the Chamber of Commerce when the hangar was rebuilt. Since 2013 the Théâtre 100 noms occupies part of the building, and 1,600 m² are devoted to the Estuaire contemporary art biennale conceived by Jean Blaise.

The site is easily accessible by public transport and has parking options nearby. Visitor hours vary depending on which events or venues are operating on any given day.

The hangar's preserved pediment bears the name of Maurice Bertin, president of the Nantes chamber of commerce when the building was rebuilt in 1949. The 150-metre-long, 50-metre-wide structure was fully air-conditioned for ripening bananas, with about 7,819 square metres of usable warehouse space.