Armin Joseph Deutsch (A. J. Deutsch, 1918–1969), was an American astronomer and a science fiction writer.
He received a doctorate in astronomy from the University of Chicago in 1946; his undergrad was from the University of Arizona in 1940. He is noted for the concept of Doppler tomography, which he presented at a symposium at Mount Wilson Observatory in 1958. He served as associate editor for the Annual Review of Astronomy and Astrophysics prior to 1966. From 1964 until 1967 he served as a councillor for the American Astronomical Society.
- Armin J. Deutsch, A study of the spectrum variables of type A, 1947,
- A. J. Deutsch, A Subway Named Mobius, Astounding Science Fiction, December 1950, was nominated for the 1951 Hugo Award (awarded in 2001) (See also the "M.T.A." song). Adapted to an Argentine movie called "Moebius" in 1996. Included in the anthology "Best SF4", edited by Edmund Crispin, Faber and Faber, 1965
- Armin J. Deutsch, The Sun, in The New Astronomy, a Scientific American Book, Simon and Schuster, New York, 1955
- A. Deutsch, W. Klemperer, eds., Space Age Astronomy: Proceedings of an International Symposium held August 7–9, 1961 at the California Institute of Technology in conjunction with the 11th General Assembly of the International Astronomical Union (IAU, GA, 11), Academic Press, New York, NY, 1962
- Armin J. Deutsch, The Ageing Stars of the Milky Way, in Stars and Galaxies: Birth, Ageing, and Death in the Universe (Thornton Page, editor), Prentice-Hall, Englewood Cliffs, NJ, 1962
- Boesgaard, Ann Merchant; Hagen, Wendy; Deutsch, Armin J. (posthumous) Circumstellar Envelopes of M Giants, Bulletin of the American Astronomical Society, Vol. 8, p. 304, March 1976 (his last paper)
The crater Deutsch on the far side of the Moon is named after him.