Nikolai Dimitrovich Avksentiev (Russian: ??????? ?????????? ??????????; 1878, Penza – 1943, New York City) was a leading member of the Russian Socialist-Revolutionary Party (PSR).
He was one of the 'Heidelberg SRs' (a group of Russian students at the University of Heidelberg in the 1890s), like V.M.
Zenzinov.
These SRs were influenced by neo-Kantian philosophy and Marxism.