Lanny J. Davis (born in 1946) is an American lawyer and former White House Counsel for President Bill Clinton.

Davis grew up in Jersey City, New Jersey. His father was a dentist in Jersey City and his mother worked as the office manager of his father's dental office. As an undergraduate at Yale, he was a member of the Delta Kappa Epsilon fraternity. According to an item in U.S. News & World Report, as part of his initiation into the fraternity, Davis underwent hazing by, among others, the future President of the United States George W. Bush. He also served as chairman of the campus newspaper, the Yale Daily News. Davis went on to graduate from Yale Law School in 1970. It was there that he first met Hillary Rodham Clinton.

Davis now lives in Potomac, Maryland with his second wife, Carolyn Atwell-Davis, who is the legislative affairs director for the National Center for Missing and Exploited Children. They have four children. One of his sons, Seth, is a columnist for Sports Illustrated magazine and a college basketball commentator for CBS.