Coordinates: 55°57′56″N 38°05′13″E / 55.96556°N 38.08694°E
Grebnevo (Russian: Гребнево) is a rural locality (a village) in Shchyolkovsky District of Moscow Oblast, Russia, located about 30 kilometers (19 mi) east of Moscow, on the outskirt of the town of Fryazino, on the bank of the Lyuboseyevka River.
Best known for its historical manor, Grebnevo served as a country seat of the Galitzine, Trubetskoy, and Bibikov noble families. Among the early owners were Bogdan Belsky and Dmitry Troubetskoy. The last Russian boyar, Ivan Trubetskoy, gave the property to his daughter Anastasia, the wife of Prince Dimitrie Cantemir, whose daughter Catherine further expanded the estate. Mikhail Kheraskov, the foremost poet of Catherine the Great's time, was the next owner. It was in Grebnevo that he completed the Rossiad, arguably the longest Russian poem.