Philip Cortelyou Johnson (July 8, 1906 – January 25, 2005) was an American architect best known for his works of modern and postmodern architecture. Among his best known designs are his modernist Glass House in New Canaan, Connecticut, and postmodern 550 Madison Avenue in New York, designed for AT&T, and 190 South La Salle Street in Chicago.
In 1930, Johnson joined the architecture department of the Museum of Modern Art in New York. There he arranged for American visits by Walter Gropius and Le Corbusier, and negotiated the first American commission for Mies van der Rohe, when he fled Nazi Germany. In 1932, he organized the first exhibition on Modern architecture at the Museum of Modern Art.
In 1978, he was awarded an American Institute of Architects Gold Medal and in 1979 the first Pritzker Architecture Prize.
His early work as a journalist for the newspaper of the extreme-right and anti-Semitic Father Charles Coughlin between 1932 and 1940, and his early and later regretted praise of Nazi Germany, led to condemnation of Johnson in the 2020s.