Leonid Aleksandrovich Vesnin (Russian: Леони́д Александрович Веснин; 10 December [O.S.

28 November] 1880 – 8 October 1933), was a Russian and Soviet architect.

The oldest of Vesnin brothers, who were influential in developing Constructivist architecture.

28 November] 1880 in a merchant family in Nizhny Novgorod.

In 1900 he got into Imperial Academy of Arts and was a student of Leon Benois until he graduated in 1909.