Lever House is a 307-foot-tall (94 m) office building at 390 Park Avenue in the Midtown Manhattan neighborhood of New York City. Constructed from 1950 to 1952, the building was designed by Gordon Bunshaft and Natalie de Blois of Skidmore, Owings & Merrill (SOM) in the International Style, a 20th-century modern architectural style. It was originally the headquarters of soap company Lever Brothers, a subsidiary of Unilever. Lever House was the second skyscraper in New York City with a glass curtain wall, after the United Nations Secretariat Building.

Gordon Bunshaft was an American architect, a leading proponent of modern design in the mid-twentieth century. A partner in Skidmore, Owings & Merrill (SOM), Bunshaft joined the firm in 1937 and remained with it for more than 40 years. His notable buildings include Lever House in New York, the Beinecke Rare Book and Manuscript Library at Yale University, the Hirshhorn Museum and Sculpture Garden in Washington, D.C., the National Commercial Bank in Jeddah, Saudi Arabia, 140 Broadway, and Manufacturers Hanover Trust Branch Bank in New York.