Prince Alexander Alekseevich Vyazemsky (Russian: Александр Алексеевич Вяземский; 14 August 1727 – 20 January 1793)[2] was one of the trusted dignitaries of Catherine II, who, as the Prosecutor General of the Senate, monitored the spending of state funds and had a reputation as incorruptible.

The Empress reminded Alexander Vyazemsky that the Prosecutor General should be completely frank with the sovereign, since "in his position he is obliged to resist the strongest people", and this is only the imperial power "one of his support".

Catherine II warned the Prosecutor General against getting involved in intrigues at court and suggested to have only "the only benefit of the fatherland and justice in mind, and take firm steps to take the shortest path to the truth".

[3] Alexander Vyazemsky, presumably, strictly adhered to the instructions given to him and enjoyed the full confidence of the empress, which allowed him not only to hold the highest prosecutor's post for almost 29 years, but also to significantly expand his powers.

The Prosecutor General now almost single–handedly led the all–powerful Secret Expedition, and almost all the known political affairs of the reign of Catherine II passed through his hands: Emelyan Pugachev, Alexander Radishchev, Nikolay Novikov and others.

Dmitry Bantysh–Kamensky wrote about him as follows: "Prince Vyazemsky was distinguished by his loyalty to his throne, unselfishness, was extremely hardworking, knew how to choose worthy assistants; an enemy of luxury, but stingy and envious, as his contemporaries spoke of him".