Cleopatra's Night is a short opera in two acts by American composer Henry Kimball Hadley.

Its libretto is by Alice Leal Pollock based on the 1838 short story "One of Cleopatra's Nights" by French author Théophile Gautier.

Cleopatra's Night is written in an eclectic late romantic style, influenced both by the dramatic lyricism of the verismo movement and the rich orchestral approach employed by Wagner and Richard Strauss.

Critical reception was generally good, with Henry T. Finck proclaiming it the best of ten American operas that had so far appeared at the Met.

Cleopatra's boat arrives, and the queen disembarks, and in her aria "My veins seem filled with flowing quicksilver..." she complains bitterly of the heat.

Even the night gives her no comfort, for she cannot forget the host of mummies buried beneath the Egyptian sands.

The queen disrobes and is entering the bath when suddenly Meïamoun emerges from the water of the pool.

Meïamoun does not cower in fear, but, when questioned explains with the words "I love you", and then embarks on a passionate poetic aria proclaiming his obsession with the queen.

Leaning on his arm, she re-enters the cangia, and it slips away into the twilight as her attendants softly chant praises to their queen.

Cleopatra urges him to flee with her to a nearby white temple, where they may ignore the dawn, but Meïamoun points out that there is not enough time.

She offers him any gift, but he only requests that she, when he is dead, will press his earthly shell to her heart as she does now, and that she will sometimes think of him in the still hours of the night.

Cleopatra claps her hands, and eunuchs enter to cover Meïamoun's body with silken cloths.

When Antony's men leave, she gently uncovers Meïamoun's body, and holding it to her heart in broken tones she tells him that she keeps her promise.