Grigory, Grigori or Grigoriy (Russian: Григорий) is a Russian masculine given names. It is the Russian version of the given name Gregory.

• Grigory Baklanov (1923–2009), Russian novelist
• Grigory Barenblatt (1927–2018), Russian mathematician
• Grigory Bey-Bienko (1903–1971), Russian entomologist
• Grigory Danilevsky (1829–1890), Russian novelist
• Grigory Falko (born 1987), Russian swimmer
• Grigory Fedotov (1916–1957), Soviet football player and manager
• Grigory Frid (1915–2012), Russian composer
• Grigory Gagarin (1810–1893), Russian painter and military commander
• Grigory Gamarnik (1929–2018), Soviet wrestler
• Grigory Gamburtsev (1903–1955), Soviet seismologist
• Grigory Ges (1916–1968), Soviet Air Force officer
• Grigory Ginzburg (1904–1961), Russian pianist
• Grigory Grum-Grshimailo (1860–1936), Russian entomologist
• Grigory Gurkin (1870–1937), Altay landscape painter
• Grigory Helbach (1863–1930), Russian chess master
• Grigory Kaminsky (1894–1938), Soviet politician
• Grigory Kiriyenko (born 1965), Russian fencer
• Grigory Kotoshikhin (c. 1630–1667), Russian diplomat and writer
• Grigory Kotovsky (1881–1925), Soviet military commander
• Grigory Kriss (born 1940), Soviet épée fencer
• Grigory Kulik (1890–1950), Soviet military commander
• Grigory Laguta (born 1984), Russian-born Latvian motorcycle speedway rider
• Grigory Landsberg (1890–1957), Soviet physicist
• Grigory Langsdorff (1774–1852), German-Russian naturalist and explorer
• Grigory Leps (born 1962), Russian singer and songwriter of Georgian origin
• Grigory Levenfish (1889–1961), Soviet chess Grandmaster
• Grigory Mairanovsky (1899–1964), Soviet biochemist and poison developer
• Grigory Margulis (born 1946), Russian mathematician
• Grigory Misutin (born 1970), Ukrainian artistic gymnast
• Grigory Nelyubov (1934–1966), Russian cosmonaut
• Grigory Neujmin (1886–1946), Russian astronomer
• Grigory Novak (1919–1980), Soviet Ukrainian weightlifter
• Grigory Okhay (1917–2002), Soviet fighter pilot
• Grigory Ordzhonikidze (1886–1937), Georgian communist
• Grigory Grigoryevich Orlov (1734–1783), Russian military commander and diplomat, lover of Catherine the Great
• Grigory Ostrovsky (1756–1814), Russian painter
• Grigory Petrovsky (1878–1958), Soviet Ukraininan communist and revolutionary
• Grigory Petrovich Nikulin (1895-1965), Soviet revolutionary
• Grigory Pirogov (1885–1931), Russian bass opera singer
• Grigory Pomerants (1918–2013), Russian philosopher and cultural theorist
• Grigory Potanin (1835–1920), Russian orientalist and explorer
• Grigory Potemkin (1739–1791), Russian military leader, statesman, favorite of Catherine the Great
• Grigory Pulov (1918–2005), Soviet air force officer
• Grigory Razumovsky (1759–1837), Ukrainian biologist, geologist and philosopher
• Grigory Romodanovsky (died 1682), Russian military commander and diplomat
• Grigory Romanov (1923–2008), Soviet politician
• Grigory Mikhaylovich Semyonov (1890–1946), Russian military commander
• Grigory Abramovich Shajn (1892–1956), Soviet Russian astronomer
• Grigory Shelikhov (1747–1795), Russian seafarer and merchant
• Grigory or Gregory Skovoroda (1722–1794), Ukrainian philosopher, poet, teacher and composer
• Grigory Sokolov (born 1950), Russian pianist
• Grigory Soroka (1823–1864), Russian painter
• Grigory Sukochev (born 1988), Australian volleyball player
• Grigory Spiridov (1713–1790), Russian admiral
• Grigory Ugryumov (1764–1823), Russian painter
• Grigory Yavlinsky (born 1952), Russian economist and politician
• Grigory Zinoviev (1883–1936), Soviet politician

• Grigori, a term used to refer to beings in the Fifth Heaven in the Second Book of Enoch
• Grigori Chukhrai (1921-2001), Russian screenwriter and director
• Grigori Galitsin (born 1957), Russian erotic photographer and porn director
• Grigori Kozintsev (1905-1973), Soviet Russian film director
• Grigori Kromanov (1926–1984), Estonian theatre and film director
• Grigori Ivanovitch Langsdorff or Georg von Langsdorff (1774-1852), Prussian aristocrat, politician and naturalist
• Grigori Marchenko (born 1946), Honorary Consul of the Singaporean government to the Kazakh government
• Grigori Panteleimonov (1885-1934), Russian sports shooter
• Grigori Perelman (born 1966), Russian mathematician
• Grigori Rasputin (1869-1916), a Russian mystic
• Grigori Voitinsky (1893-1956), Comintern official
• Grigori Zozulya (1893-1973), Russian artist

• Grigoriy Andreyev (born 1976), Russian marathon runner
• Grigoriy Dobrygin (born 1986), Russian actor
• Grigoriy Gruzinsky (1833–1899), Georgian prince
• Grigoriy Myasoyedov (1834–1911), Russian painter
• Grigoriy Mihaylovich Naginskiy (born 1958), Russian politician
• Grigoriy Oparin (born 1997), Russian chess Grandmaster
• Grigoriy Oster (born 1947), Russian author and screenwriter
• Grigoriy Plaskov (1898–1972), Soviet artillery lieutenant
• Grigoriy Tarasevich (born 1995), Russian swimmer
• Grigoriy Yablonsky (born 1940), Soviet-born American chemical engineer and professor
• Grigoriy Yegorov (born 1967), Kazakhstani former pole vaulter

• Father Grigori, in the computer game Half-Life 2
• Grigori Rasputin (Hellboy), a comic book character
• Grigori Daratrazanoff, a main Carpathian character in Christine Feehan's Dark series
• Grigori, the name of the titular dragon in the computer game Dragon's Dogma
• Grigori Panteleevich Melekhov, in And Quiet Flows the Don
• Octopus Grigori, an aggressive octopus in Gravity's Rainbow
• Grigori Weaver, a Russian Special Agent, part of the CIA in Call of Duty: Black Ops

• Daniel Grigori, an angel in Lauren Kate's Fallen novel series
• Gregory (given name)
• Krikor, Western Armenian variant
• Ryhor, Belarusian variant