Jerome Isaac Friedman (born March 28, 1930) is an American physicist. He is Institute Professor and Professor of Physics, Emeritus, at the Massachusetts Institute of Technology. He won the 1990 Nobel Prize in Physics along with Henry Kendall and Richard Taylor, for work showing an internal structure for protons later known to be quarks.
Friedman was born in Chicago, Illinois to a Jewish family. He studied at the University of Chicago. In 1956, he married Tania Letetsky-Baranovsky. They have four children.
In 2003, he was one of 22 Nobel winners who signed the Humanist Manifesto. He is an atheist.