Princess Catherine Dolgoruki (or Dolgoruky, or Dolgorukaya), also known as Princess Ekaterina Michielovna Dolgorukaya and Princess Catherine Yourievska, was the daughter of Prince Micheal Dolgorukij and Vera Visnevskaya and was Tsar Alexander II of Russia's mistress and created Princess Yurievsky.

Alexander was faithful to her rather than to his other mistresses. After Alexander's wife died he married Catherine. Catherine and Alexander had four children, George Alexandrovich Yurievsky Romanov, Olga Alexandrovna Yurievsky Romanov, Boris Alexandrovich Yurievsky Romanov, and Catherine Alexandrovna Yurievsky Romanov.

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