Nouveau réalisme (new realism) refers to an artistic movement founded in 1960 by the art critic Pierre Restany and the painter Yves Klein during the first collective exposition in the Apollinaire gallery in Milan. Pierre Restany wrote the original manifesto for the group, titled the "Constitutive Declaration of New Realism," in April 1960, proclaiming, "Nouveau Réalisme—new ways of perceiving the real." This joint declaration was signed on 27 October 1960, in Yves Klein's workshop, by nine people: Yves Klein, Arman, Martial Raysse, Pierre Restany, Daniel Spoerri, Jean Tinguely and the Ultra-Lettrists, Francois Dufrêne, Raymond Hains, Jacques de la Villeglé; in 1961 these were joined by César, Mimmo Rotella, then Niki de Saint Phalle and Gérard Deschamps. The artist Christo showed with the group.
Contemporaries of American pop art, and often conceived as its transposition in France, new realism was, along with Fluxus and other groups, one of the numerous tendencies of the avant-garde in the 1960s. It was dissolved in 1970.
The first exposition of the nouveaux réalistes took place in November 1960 at the Paris "Festival d'avant-garde." This exposition was followed by others: in May 1961 at the Gallery J. in Paris; International Exhibition of the New Realists, a survey of contemporary American Pop Art and the Nouveau Réalisme movement at the Sidney Janis Gallery in New York at the end of 1962; and at the Biennale of San Marino in 1963 (which would be the last collective show by the group). The movement had difficulty maintaining a cohesive program after the death of Yves Klein in June, 1962.
Conceptions of the nouveaux réalistes 
The members of the nouveaux réalistes group tended to see the world as an image from which they could take parts and incorporate them into their works—as they sought to bring life and art closer together. They declared that they had come together on the basis of a new and real awareness of their "collective singularity", meaning that they were together in spite of, or perhaps because of, their differences. But for all the diversity of their plastic language, they perceived a common basis for their work; this being a method of direct appropriation of reality, equivalent, in the terms used by Pierre Restany, to a "poetic recycling of urban, industrial and advertising reality".
Thus the nouveaux réalistes advocated a return to "reality" in opposition to the lyricism of abstract painting. They also wanted to avoid what they saw as the traps of figurative art, which was seen as either petty-bourgeois or as Stalinist socialist realism. Hence the Nouveau Réalistes used exterior objects to give an account of the reality of their time. They were the inventor of the décollage technique (the opposite of collages), in particular through the use of lacerated posters—a technique mastered by François Dufrene, Jacques Villeglé, Mimmo Rotella and Raymond Hains. Often these artists worked collaboratively and it was their intention to present their artworks in the city of Paris anonymously.
The term "new realism" was first used in May 1960 by Pierre Restany, to describe the works of Arman, François Dufrêne, Raymond Hains, Yves Klein, Jean Tinguely and Jacques Villeglé as they exhibited their work in Milan. He had discussed this term before with Yves Klein (who died prematurely in 1962), who preferred the expression "today's realism" (réalisme d'aujourd'hui) and criticized the term "New." After the first "Manifesto of New Realism," a second manifesto, titled "40° above Dada" (40° au-dessus de Dada) was written between 17 May and 10 June 1961. César, Mimmo Rotella, Niki de Saint-Phalle (then practicing "shooting paintings") and Gérard Deschamps then joined the movement, followed by Christo in 1963. Klein, however, started to distance himself from the group around 1961, disliking Restany's insistence on a Dadaist heritage.
Nouveau réalistes made extensive use of collage and assemblage, using real objects incorporated directly into the work and acknowledging a debt to the readymades of Marcel Duchamp. But the New Realism movement has often been compared to the Pop Art movement in New York for their use and critique of mass-produced commercial objects (Villeglé's ripped cinema posters, Arman's collections of detritus and trash), although Nouveau Réalisme maintained closer ties with Dada than with Pop Art.
The new realists in architecture 
"The new realists" is also a term applied to a group of Australian Architects determined to create a "New Realism" in Architecture, based on the understanding of past developments in the discipline of Architecture and modern day explorations of new technologies in the fields of design and building technology.
The new realists 
Arman, Foto: Lothar Wolleh
Villiglé, Foto: Lothar Wolleh
Niki de Saint Phalle, Foto:Lothar Wolleh
Jean Tinguely, Foto Lothar Wolleh
- Jill Carrick, Nouveau Réalisme, 1960s France, and the Neo-avant-garde: Topographies of Chance and Return, Ashgate Press, 2010. 
- New Realisms, 1957–1962: Object Strategies Between Readymade and Spectacle, Museo Nacional Centro de Arte Reina Sofía, Madrid, 2010.
- Pierre Restany, Manifeste des Nouveaux Réalistes, Editions Dilecta, Paris, 2007.