Ernest "Ernie" Grunfeld (born April 24, 1955) is the General Manager of the Washington Wizards. He was also once a professional basketball player. He served as general manager of the New York Knicks of the National Basketball Association from 1989 to 1999, and as the Bucks' general manager from 1999–2003, at which time he became the President of Basketball Operations for the Washington Wizards.
Born in Satu Mare, Romania, Grunfeld immigrated together with his parents, Alex and Livia to the United States in 1964. He grew up in Forest Hills, in Queens, New York City, where he attended Forest Hills High School.
In the summer of 1973, Grunfeld was selected to play on the American team for the Maccabiah Games, the only high school student on the starting five. He led the team in scoring with a 20-point average, but Israel defeated the U.S. in the final 86-80.