21st-century American architects

Howard Heemstra was an architect, professor of architecture, and photographer. He was born in Orange City, Iowa on December 22, 1928 and died in Ames, Iowa on July 22, 2011. He graduated from Northwestern Academy (1946), and Northwestern Junior College in Orange City in 1948 before earning a Bachelor of Architecture degree from Iowa State University in 1952.
After working briefly in Sioux City for an architecture firm Heemstra joined the US Army and served two years in the Korean War. After returning from abroad he applied for graduate studies to Harvard University and the Cranbrook Academy of Arts in Bloomfield, Michigan. Since he could not afford Harvard's tuition he enrolled at Cranbrook and earned his Master of Architecture degree in 1958. Heemstra worked twelve years as an architect before joining Iowa State University in 1966. He became a full professor in 1976 and continued to teach until his retirement in 2003, when he was named Professor Emeritus.
Heemstra worked at Ray Crites' architectural office in Cedar Rapids when the commission for Stephens Auditorium, part of the Iowa State Center on the Iowa State University campus, came to the firm, and he was the project architect for the building which was completed in 1969. Stephens Auditorium was selected as the "Building of the Century" by the Iowa chapter of the American Institute of Architects in 2004.

Evans Woollen III (August 10, 1927 – May 17, 2016) was an American architect who is credited for introducing the Modern and the Brutalist architecture styles to his hometown of Indianapolis, Indiana. Woollen, a fellow of the American Institute of Architects (FAIA) and a graduate of the Yale School of Architecture, was active in the field from the mid-1950s to the early 2000s. He established his own architecture firm in Indianapolis in 1955 that became known as Woollen, Molzan and Partners; it dissolved in 2011. As a pacesetter among architects in the Midwest, Woollen, dubbed the dean of Indiana architects, was noted for his use of bold materials and provocative, modern designs.
Some of Woollen's most iconic projects were built in Indianapolis: Clowes Memorial Hall, the Minton-Capehart Federal Building, John J. Barton Tower, the White River Gardens Conservatory, and major additions to the Indianapolis Central Library and The Children's Museum of Indianapolis. Woollen also designed several of the city's notable mid-century modern homes. In addition, Woollen and his firm planned and managed the renovation of several of the city's historic structures, including the Indiana Theatre, the Majestic Building, and Indianapolis Union Station, among others. Major projects outside of Indianapolis included the Over-the-Rhine Pilot Center in Cincinnati, Ohio; Indiana University's Musical Arts Center in Bloomington, Indiana; and the Moody Music Center in Tuscaloosa, Alabama. Woollen was especially known for his churches and college libraries, such as Saint Andrew's Abbey Church in Cleveland, Ohio; the Cushwa-Leighton Library at Saint Mary's College in Notre Dame, Indiana; and the Grainger Engineering Library at the University of Illinois at Urbana-Champaign.

Dion Neutra (October 8, 1926 – November 24, 2019) was a modernist / International style American architect and consultant who worked originally with his father, Richard Neutra (1892–1970).