Saul Arno Teukolsky (born August 2, 1947, Johannesburg, South Africa) is a theoretical astrophysicist and a professor of Physics and Astronomy at Caltech and Cornell University.

[1] After matriculating from Selborne College (East London, South Africa) in 1964, Teukolsky received a Bachelor of Science in Honors Physics and Honors Applied Mathematics from the University of the Witwatersrand, South Africa in 1970.

He joined Cornell University as an Assistant Professor of Physics and Astronomy in 1974 after serving as the Richard Chace Tolman Research Fellow for one year at Caltech.

In 1999 he was named the Hans A. Bethe professor of physics and astrophysics, a position which he still holds.

[2] Today his research group works on numerical relativity calculations to predict signals from the LIGO and LISA experiments.