Jacob Klein (Hebrew: יעקב קליין; born 1949[1]) is the Herman Mark Professor of Soft Matter Physics at the Weizmann Institute in Rehovot, Israel.
Klein was born in Tel Aviv, Israel and completed secondary school in England.
Following the completion of military service in Israel in 1970, Klein returned to England and was an undergraduate and graduate student at Cambridge University; his thesis was supervised by David Tabor.
In October 2000 Klein left the Institute for a period, and was appointed as head of the Physical and Theoretical Chemistry Laboratory at Oxford.
Klein has authored or co-authored more than 290 peer-reviewed publications, and served on the editorial boards of a number of scientific journals.