Steve Kluger (born June 24, 1952) is an American author, playwright, journalist, librettist and lyricist, whose writing is noted for its baseball, gay, and historical (particularly World War II) themes. He has also worked on civil rights, gay rights, and baseball community causes, including Japanese American internment redress and the campaign to save Fenway Park. His second novel, Last Days of Summer, is the basis for the 2018 musical of the same title. Steve Kluger lives in Brookline, Massachusetts.