John Frederick Harbeson (30 July 1888 – 21 December 1986) was a rational classicist Philadelphia architect and a long-time architecture professor at the University of Pennsylvania.
He was a principal in the Philadelphia design firm, Harbeson, Hough, Livingston & Larson, successors to the office of Paul Cret.
After graduation, he joined Kelsey and Cret to work on the design of the Pan-American Union Building in Washington, DC.
Harbeson is best known for his teaching at the University of Pennsylvania and respectively as one of the main teachers of the later seminal architect Louis Kahn.
In 1955 he was elected into the National Academy of Design as an Associate member, and became a full Academician in 1957.