Prince Leopold Clement Philipp August Maria of Saxe-Coburg and Gotha (19 July 1878 – 27 April 1916) was an Austro-Hungarian officer and the heir apparent to the wealth of the House of Koháry.

Prince Leopold Clement was the sole heir to the wealth his father's family had inherited from their ancestress, Princess Maria Antonia Koháry.

[1] A Hussar captain in the Austro-Hungarian Army, Prince Leopold Clement met a Viennese girl named Camilla Rybicka[note 1] at a charity bazaar in 1907.

[1][3] In Paris on 1 July 1914, Prince Leopold Clement wrote her a letter, promising to marry her within six months, naming her his sole heir, and requesting his father to pay her 2 million Austro-Hungarian krones in the event of his death.

[3] Leopold Clement was aware that such a mesalliance would have deprived him of the fortune he stood to inherit[1] because his father had no intention of permitting the union,[3] and that marrying Rybicka would have forced him to resign his officer's commission.