Smolenka (Russian: Смоленка) is a minor river in the city of Saint Petersburg, Russia. It is one of the armlets of the Neva River forming its delta. It branches off the Malaya Neva armlet at (59°57′00″N30°16′25″E), and flows through the Smolensky Cemetery into the Gulf of Finland, separating Decembrists' Island from the Vasilievsky Island.