Art Deco, short for the French Arts Décoratifs, and sometimes just called Deco, is a style of visual arts, architecture, and product design, that first appeared in France in the 1910s (just before World War I), and flourished in the United States and Europe during the 1920s and 1930s. Through styling and design of the exterior and interior of anything from large structures to small objects, including how people look (clothing, fashion and jewelry), Art Deco has influenced bridges, buildings (from skyscrapers to cinemas), ships, ocean liners, trains, cars, trucks, buses, furniture, and everyday objects like radios and vacuum cleaners.

It got its name after the 1925 Exposition internationale des arts décoratifs et industriels modernes (International Exhibition of Modern Decorative and Industrial Arts) held in Paris.

Art Deco combined modern styles with fine craftsmanship and rich materials. During its heyday, it represented luxury, glamour, exuberance, and faith in social and technological progress.

From its outset, Art Deco was influenced by the bold geometric forms of Cubism and the Vienna Secession; the bright colours of Fauvism and of the Ballets Russes; the updated craftsmanship of the furniture of the eras of Louis Philippe I and Louis XVI; and the exoticized styles of China, Japan, India, Persia, ancient Egypt and Maya art. It featured rare and expensive materials, such as ebony and ivory, and exquisite craftsmanship. The Empire State Building, Chrysler Building, and other skyscrapers of New York City built during the 1920s and 1930s are monuments to the style.

In the 1930s, during the Great Depression, Art Deco became more subdued. New materials arrived, including chrome plating, stainless steel and plastic. A sleeker form of the style, called Streamline Moderne, appeared in the 1930s, featuring curving forms and smooth, polished surfaces. Art Deco is one of the first truly international styles, but its dominance ended with the beginning of World War II and the rise of the strictly functional and unadorned styles of modern architecture and the International Style of architecture that followed.