Robert Eugene Marshak (October 11, 1916 – December 23, 1992) was an American physicist, educator, and eighth president of the City College of New York.

He went to the City College of New York for one semester and then "received a Pulitzer Scholarship which provided full tuition and a stipend which allowed him to continue his education at Columbia University.

Along with his thesis advisor, Hans Bethe, he discovered many of the fusion aspects involved in star formation.

This theory was later presented by Richard Feynman and Murray Gell-Mann, which later contributed to each winning a Nobel Prize in Physics.

[1] In addition to Sudarshan, his doctoral students include Susumu Okubo[citation needed], Rabindra Mohapatra and Tullio Regge.