Jeremiah (Jerry) Paul Ostriker (born April 13, 1937) is an astrophysicist and a professor of astronomy at Columbia University.He received his B.A. from Harvard, his Ph.D at the University of Chicago, and then carried out post-doctoral work at the University of Cambridge. From 1971 to 1995, Ostriker was a professor at Princeton, and served as Provost there from 1995 to 2001. From 2001 to 2003, he was appointed as Plumian Professor of Astronomy and Experimental Philosophy at the Institute of Astronomy, Cambridge. He then returned to Princeton as the Charles Young Professor of Astronomy.He moved to Columbia in 2012.He received Bruce Medal in 2011.