Frederick Dennis Greene (January 11, 1949 – September 5, 2015) was an American singer who was a member of Sha Na Na who were formed in 1969 at Columbia University in New York as the Columbia Kingsmen.
Greene choreographed most of the moves for the show, on which he was known simply as Denny.
After Greene graduated from Yale Law School, he worked as Vice President of Production and Features at Columbia Pictures.
Greene also served on the Board of Directors for the Society of American Law Teachers and is listed in Who's Who Among African-Americans.
Greene died in Dayton on September 5, 2015, from esophageal cancer just a few weeks after his diagnosis.