Rose Kroshbon of Switzerland (Rose Hannah Kroshbon; 8 November 1724) is the only daughter of William II of Switzerland. She is also Countess of Solothorn. Disappearing after the Fall of the Caribbean in 1746, she returned 5 years later to re-take her place as a Princess in the Kroshbon Monarchy.
In May 1751, after Prince Ryan Kroshbon fled Switzerland to Russia, Rose was named his successor as heir apparent, and named Princess Royal of Switzerland. Her marriage to King Ferdinand Clemente of Spain in October 1751 made her the Queen of Spain. She would later depart the Kingdom of the Swiss, three days later.