The International Style or internationalism is a major architectural style that was developed in the 1920s and 1930s and was closely related to modernism and modernist architecture. It was first defined by Museum of Modern Art curators Henry-Russell Hitchcock and Philip Johnson in 1932, based on works of architecture from the 1920s. The terms rationalist architecture and modern movement are often used interchangeably with International Style, although the former is mostly used in the English-speaking world to specifically refer to the Italian rationalism, or even the International Style that developed in Europe as a whole.

The International Typographic Style is a systemic approach to graphic design that emerged during the 1930s – 1950s but continued to develop internationally. It is considered the basis of the Swiss style. It expanded on and formalized the modernist typographic innovations of the 1920s that emerged in part out of art movements such as Constructivism (Russia), De Stijl and at the Bauhaus (Germany). The International Typographic Style has had profound influence on graphic design as a part of the modernist movement, impacting many design-related fields including architecture and art. It emphasizes simplicity, clarity, readability, and objectivity. Hallmarks of the style are asymmetric layouts, use of a grid, sans-serif typefaces like Akzidenz Grotesk and Helvetica, and flush left, ragged right text. The style is also associated with a preference for photography in place of illustrations or drawings. Many of the early International Typographic Style works featured typography as a primary design element in addition to its use in text, and it is for this that the style is named. The influences of this graphic movement can still be seen in design strategy and theory to this day.