Prince Alexander Sergeevich Obolensky (Russian: Александр Серге́евич Оболенский; 17 February 1916 – 29 March 1940) was a Rurikid prince of Russian aristocratic descent who became a naturalised Briton,[1] having spent most of his life in England, and who went on to represent England in international rugby union.

A member of the Rurik dynasty, Obolensky was born at Petrograd (now Saint Petersburg) on 17 February 1916, the son of Prince Sergei Alexandrovich Obolensky, an officer in the Tsar's Imperial Horse Guards and his wife Princess Lyubov Obolenskaya (née Naryshkina).

[2] The family name derives from the ancient Russian city of Obolensk; they fled Russia after the Bolshevik Revolution of 1917 and settled in Muswell Hill, London.

[5] Prince Obolensky won three England caps later that year (against Wales on 18 January, Ireland on 8 February and Scotland on 21 March), but scored no further tries.

[7] On 29 March 1940, a day after being recalled to the England squad to play Wales,[8] Pilot Officer Obolensky was killed during training when his Hawker Hurricane Mark 1 overshot the runway at Martlesham Heath Airfield, Suffolk.