Jason Dov Greenblatt (born 1966/67) is an American lawyer. He was the executive vice president and chief legal officer to Donald Trump and The Trump Organization, and is his advisor on Israel. In January 2017, he was appointed as the United States Special Representative for International Negotiations by President Donald Trump.
Greenblatt is the son of Hungarian Jewish refugees, and grew up in Queens, New York City. During World War II, his father fled Szatmárcseke in 1941 as a child, while his mother hid in Budapest with her family during the Nazi occupation, and fled to the United States after the Hungarian Revolution in 1956. He is the first cousin, once removed, of anti-war activist Robert Greenblatt.
Greenblatt was educated at the Marsha Stern Talmudical Academy, followed by Yeshiva University. In 1992, Greenblatt received a JD degree from the New York University School of Law.
Greenblatt has worked for Trump since 1997, rising to executive vice president and chief legal officer to Trump and the Trump Organization, and his advisor on Israel.
Greenblatt favors a two-state solution, reached by the parties concerned and not imposed from outside by a body such as the United Nations. Greenblatt has stated that "West Bank settlements are not an obstacle to peace".
In late December 2016, Trump named Greenblatt as his Representative for International Negotiations for his incoming administration. In 2017, Greenblatt led a listening tour in which he visited representatives from Israel, the Yesha Council, and the Palestinian Authority.