Pavel Borisovich Axelrod (; 25 August 1850 – 16 April 1928) was an early Russian Marxist revolutionary. Along with Georgi Plekhanov, Vera Zasulich, and Leo Deutsch, he was one of the members of the first organization of Russian Marxists, Emancipation of Labor. After the 2nd Congress of the Russian Social Democratic Labour Party, he was part of the Menshevik faction, with which he was identified until his death.