The Bouvier Affair was a number of international lawsuits that started in 2015, and subsequent events. The lawsuits allege that Swiss art shipper and dealer Yves Bouvier defrauded his clients by misrepresenting the original cost of art works and subsequently overcharging them. The affair has played out in courts in Monaco, Switzerland, France, the US, Hong Kong and Singapore.

Yves Bouvier is a Swiss businessman and art dealer best known for his role in the Bouvier Affair that resulted in criminal charges being brought against him in France and Monaco. He was the president of Natural Le Coultre, an international company specialized in the transportation, storage, scientific analysis, and conservation of works of art, luxurious goods and other collectibles.