Prince Gabriel Constantinovich of Russia (Russian: ??????? ??????????????; 15 July 1887 – 28 February 1955) was the second son of Grand Duke Konstantin Konstantinovich of Russia and his wife, Grand Duchess Elizabeth Mavrikievna of Russia.
A great-grandson of Tsar Nicholas I, he was born in Imperial Russia and served in the army during World War I.
He lost much of his family during the war and the Russian Revolution.
He narrowly escaped execution by the Bolsheviks and spent the rest of his life living in exile in France.