(b Pittsburgh, PA, 28 March 1908). American architect. He received his architectural training at the School of Architecture (1927-8), University of Southern California, Los Angeles. He worked with Rudolph Schindler (1932) and Richard Neutra (1932-5) who both influenced his development greatly. In 1936 he opened his own office in Los Angeles.
His principal early work consisted of private houses in the Los Angeles area, but like both Schindler and Neutra, Ain had a marked interest in low-cost housing. One example is his Dunsmuir Flats (1937-9), 1281 South Dunsmuir Avenue, Los Angeles. In 1940 Ain received a Guggenheim Fellowship to explore a system of panel design for such housing.
In collaboration with landscape architect Garrett Eckbo (b 1910) Ain produced setback housing units in garden settings for various locations in the Los Angeles area; most notable were Park Planned Homes (1946), Altadena, CA, and two groups in Los Angeles, the Mar Vista Housing complex and the Avenel Housing complex, 2839-45 Arenel Street, Silver Lake (both 1948). In 1950, with Joseph Johnson and Alfred Day, Ain designed an exhibition house for the garden of MOMA, New York. Ain served as Dean of the School of Architecture, Pennsylvania State University, from 1963 to 1967.