Dutch De Stijl (pr. duh-steil), English: The Style - was an art movement (also known as "neoplasticism"- the new plastic art) of the 1920s that sought to express a new Utopian ideal of spiritual harmony and order. It advocated pure abstraction and universality by a reduction to the essentials of form and colour- the vertical and the horizontal directions and the primary colors of red, blue and yellow along with black and white.

Piet Mondriaan (Dutch, 1872-1944), the group's most renowned artist, published a manifesto titled Neo-Plasticism in 1920. Painter Theo van Doesburg (Dutch, 1883-1931) published a journal named De Stijl from 1917 to 1928, spreading the theories of the group, which also included the painter George Vantongerloo (Belgian, 1886-1965) and the architects J.J.P. Oud (Dutch, 1890-1963) and Gerrit Rietveld (Dutch, 1888-1965).

In many of the works under this movement, the vertical and the horizontal lines tend to slide past each other and do not intersect- for example some of Mondriaan's paintings, Rietveld's Schröder house and the Red and blue chair.

The movement was influenced by the neoplatonic philosophy of the mathematician M. H. J. Schoenmaekers and his books. The term Neo-Plasticism was also his.

The work of De Stijl exerted tremendous influence on the Bauhaus and the International style as well as clothing and interior design.

Neoplasticists include:

• Piet Mondriaan - 1872 - 1944
• Theo van Doesburg 1883-1931
• Ilya Bolotowsky - 1907-1981
• Marlow Moss 1890 - 1958
• Amédée Ozenfant 1886 - 1966
• Max Bill 1908 - 1994
• Jean Gorin 1899-1981
• Burgoyne Diller 1906-1965
• Georges Vantongerloo 1886-1965

For the 2000 indie rock album by The White Stripes, see De Stijl (album)