Alexander Evreinov (March 8, 1877 – August 20, 1959) was a Russian bishop, converted to Catholicism from Russian Orthodoxy.
Being a citizen with a noble origin in Saint Petersburg, Evreinov was a member of the Foreign Affairs department of the Russian nation before his conversion to the Catholic faith and ordination to the priesthood.
His consecration as a Catholic bishop of the Byzantine tradition was only formal, because Evreinov did not have any jurisdiction among Russian Catholics neither inside Russia nor abroad.