Prince Grigory Grigoryevich Orlov (Russian: Григорий Григорьевич Орлов; 17 October 1734 – 24 April 1783) was a favourite of the Empress Catherine the Great of Russia, Prince of the Holy Roman Empire (1772), state and military figure, collector, patron of arts, and General-in-Chief.
He patronised M. V. Lomonosov, D. I. Fonvisin, V. I. Bazhenov and gave them financial support. Honorary member of the Imperial Academy of Arts (since 1765). He collected paintings (including Rembrandt, P. P. Rubens, Titian), sculpture, Chinese, Japanese and Russian porcelain, hunting weapons, etc. (Orlov's collection has been preserved almost completely; it is now in the State Museum-Reserve "Gatchina" of the eponymous city). A large landowner, particularly of the Gatchina manor, where Orlov commissioned the construction of a palace and a landscape garden.