Countess Emilie of Reichenbach-Lessonitz née Ortlöpp (13 May 1791 in Berlin – 12 February 1843 in Frankfurt) was the mistress and later second wife of Elector William II of Hesse.

He brought her to Kassel in 1813, leading to a de facto termination of his marriage with Princess Augusta of Prussia, but for political reasons, he was not allowed to divorce his wife.

He initially moved to Hanau and later to Frankfurt, where he acquired a palace in the Neue Mainzer Straße [de] and later a garden house in the Gallus district.

The marble sarcophagus was commissioned by the Countess's children and created in 1863 by the sculptor Eduard Schmidt von der Launitz.

After Emilie's death, William married a third time, with Caroline von Berlepsch (1820–1877), whom he created Countess of Bergen.