January 18, 1974 - First Tape Session with Michael Bennett and 22 dancers
August – September 1974 - First Workshop of A Chorus Line

January – February 1975 - Second Workshop of A Chorus Line
April 16, 1975 - First Off-Broadway Preview at The Public’s Estelle R. Newman Theater
May 21, 1975 – Original Off-Broadway Opening Night
June 3, 1975 - Columbia Records records Original Cast Album
July 13, 1975 - Final Off-Broadway Performance (101 Performances Total)
July 25, 1975 - First Broadway Performance, Shubert Theatre
October 19, 1975 - Official Broadway Opening Night

March 23, 1976 – A Chorus Line receives 12 Tony Award nominations
April 19, 1976 – A Chorus Line wins 9 Tony Awards
May 3, 1976 - Pulitzer Prize for Drama is awarded to A Chorus Line
May 6, 1976 - National Company opens in San Francisco
May 6, 1976 - International Company opens in Toronto
July 1, 1976 – A Chorus Line opens in Los Angeles
July 22, 1976 – A Chorus Line opens in London

February 12, 1977 – A Chorus Line wins the London Evening Standard "Best Musical" Award
April 7, 1977 – A Chorus Line wins five L.A. Drama Critics Awards
May 24, 1977 - Australian production opens in Sydney

September 29, 1983 – At 3,389 performances, A Chorus Line passes Grease to become the longest-running show in Broadway history

April 28, 1990 – A Chorus Line closes on Broadway after 6,137 performances

July 23, 2006 – The 2006 Broadway revival production of A Chorus Line begins performances at The Curran Theatre in San Francisco, California
September 18, 2006 – The first preview of the 2006 Broadway production of A Chorus Line at the Schoenfeld Theatre in New York City
October 5, 2006 – Opening night of the A Chorus Line revival on Broadway.

May 15, 2007 –A Chorus Line receives 2 Tony Award nominations including Best Musical Revival

August 17, 2008 – A Chorus Line revival closes on Broadway after having played 18 preview and 759 regular performances