Ekaterina Alekseyevna Dolgorukova

Princess Ekaterina Alekseyevna Dolgorukova (Russian: Екатерина Алексеевна Долгорукова; 1712–1747) was a Russian noble, engaged to Tsar Peter II of Russia.

She grew up with her brother Ivan in Warsaw in the house of her grandfather Gregory Fjodorovitj.

On 19 November 1729, she was officially engaged to the Tsar, given the title "Her Highness the Bride Empress", and installed the day after in the Golovinskii Palace.

Her family, the Dolgorukovs, tried to install her as ruling Empress in the manner of Catherine I of Russia but did not succeed.

She left the palace, and at the installment of Empress Anna Ivanovna, she was deported with her family to Beryozov.