Kateryna Desnytska, Duchess of Phitsanulok (Ukrainian: Катерина Десницька; Thai: คัทริน เดสนิตสกี สโตน; 27 April 1886 – 3 January 1960) was a Ukrainian-born nurse who became a princess as wife of the Siamese prince Chakrabongse Bhuvanath.

[1] Kateryna Desnytska was born on 27 April 1886 in Lutsk, Volhynian Governorate, Russian Empire (today northwestern Ukraine).

In March 1905, she attended a grand ball hosted by Tsar Nicholas II where she met her future husband, Chakrabongse Bhuvanat.

Following her return from Manchuria, he proposed to Desnitski, of which she accepted on the condition that she would be his only wife as Siamese society tolerated polygamy for royals.

The two then had a son called Chula Chakrabongse, who was born on 28 March 1908 at their residence at the Paruskavan Palace in Bangkok.

Together with her husband, they travelled to Saint Petersburg where they were received by Nicholas II, before continuing on to visit her relatives in Kyiv.

[3] Not pleased with his polygamy, she divorced Chakrabongse in 1919, but she refused an initial financial settlement for a smaller annual payment of £1,200.

In 1995, Narisa Chakrabongse, in collaboration with Eileen Hunter (her maternal aunt), published the book Katya and the Prince of Siam.

Her son, Catherine's great-grandson, Hugo Chakrabongse Levy, a musician and composer, is married to Thai actress Tasanavalai Ongartittichai [th].