Lady, Be Good (title sometimes presented with an exclamation point) is the title of a Broadway musical play that was written by Guy Bolton, Fred Thompson, featured music by George and Ira Gershwin. It debuted at the Liberty Theatre on December 1, 1924.

It is a musical comedy about a brother and his sister who are out of money and each eager to sacrifice him- or herself to help the other. It originally starred brother and sister performers Fred Astaire and Adele Astaire. It ran for 330 performances in the original Broadway run.

The best known song from the score was "Oh, Lady be Good!".

Two films by this title were produced: a 1928 silent film and a 1941 film starring Eleanor Powell. Neither film was adapted from the stage play, although the songs "Oh, Lady Be Good!" and "Fascinating Rhythm" are performed in the Powell film.

Songs

Act I

• Hang on to Me - Dick Trevor and Susie Trevor

• A Wonderful Party - Guests

• End of a String - Ensemble

• We're Here Because - Daisy Parke, Bertie Bassett and Guests

• Fascinating Rhythm - Susie Trevor, Dick Trevor and Jeff

• So Am I - Jack Robinson and Susie Trevor

• Oh, Lady be Good! - J. Watterson Watkins and Girls

Act II

• Weatherman/Rainy Afternoon Girls - Ensemble

• 'The Half of it, Dearie' Blues - Shirley Vernon and Dick Trevor

• Juanita - Susie Trevor and Boys

• Leave It to Love - Susie Trevor, Jack Robinson, Shirley Vernon and Dick Trevor

• Little Jazz Bird - Jeff

• Insufficient Sweetie (Music and Lyrics By Cliff Edwards and Gilbert Wells) - Jeff

• Who Takes Care of the Caretaker's Daughter? (Music and Lyrics By Chick Endor) -

• It's All the Same to Me (Music and Lyrics By Chick Endor) -

• Carnival Time - Ensemble

• Swiss Miss (Lyrics By Arthur Jackson and Ira Gershwin) - Susie Trevor and Dick Trevor