Mark Aleksandrovich Eydelshteyn was born on 18 February 2002 in
Nizhny Novgorod,
Russia and is of
Jewish heritage. He has a younger brother, Matvey Eydelshteyn (
Russian: Матвей Эйдельштейн). His mother, Olesya Valeryevna Eydelshteyn, works as a teacher of stage speech (dialect) In 2018, Eydelshteyn passed the regional selection for the "Living Classics" competition for young readers and made it to the all-Russian final, held in
Artek. There, Eydelshteyn met the dean of the acting department of the
Russian Institute of Theatre Arts Taras Belousov, who advised him to finish school as soon as possible and enter a
theatre university — which he did, upon graduating from his mother's school in 2019, entering the
Moscow Art Theatre School-Studio. He graduated in 2023. ==Career==