Jerry S. Grafstein, B.A., J.D., Q.C. (born January 2, 1935), is a Canadian lawyer, businessman, and politician who served in the Senate of Canada from 1984 to 2010. Grafstein was the longest-serving member of the Standing Senate Committee on Foreign Affairs and International Trade. He served as co-chair of the Canada-United States Inter-Parliamentary Group and as a senior officer of the Organization for Security and Co-Operation in Europe (OSCE) Parliamentary Assembly for over a decade.