Ernest Nash (September 14, 1898, in Potsdam, Germany – May 18, 1974 in Rome, Italy) was a student of Roman architecture and pioneer of archaeological photography.
He was a graduate of the University of Jena and had a law office in his native city of Potsdam, Germany.
Nash first went to Italy on August 30, 1936, with the goal of documenting in photographs the ancient ruins of Rome, Ostia, and Pompeii.
He established the Fototeca Unione archive at the American Academy in Rome in 1957 and served as its director.
Besides architectural photography he also produced a series of portraits of famous musicians, including Béla Bartók, while he lived in New York City.