Andrew J. Moyer (November 30, 1899 – February 17, 1959) was an American microbiologist. He was a researcher at the USDA Northern Regional Research Laboratory in Peoria, Illinois. His group was responsible for the development of techniques for the mass production of penicillin. This led to the wide scale use of penicillin in World War II. Moyer was inducted into the National Inventors Hall of Fame in 1987. A scholarship fund was created in his name at the University of Maryland in 1977.