Frederick L. Ackerman (1878–1950) was an architect and housing reformer in the United States. He supported proactive engagement of the federal government to supply quality housing for the working class. He participated in the federal government's earliest housing program with architects Clarence S. Stein and Henry Wright on their projects Sunnyside (1924) and Radburn (1928), and worked for the New York City Housing Authority. While he favored traditional architecture and lower income housing, he also designed modernist buildings, luxury apartment buildings and home designs.[1][2] Ackerman graduated from Cornell University in 1901 and designed Balch Hall on campus in 1929. He also designed Day Hall, Cornell's main administrative building, in 1947.[3]