Alexander Valentinovich Titov (Russian: Алекса́ндр Валенти́нович Тито́в; born 18 July 1957 in Leningrad) is a Russian rock musician, known for his role as bassist of the band Aquarium, position previously held by Fan (Michael Feinstein-Vasiliev). He has also performed with the bands Avgust, Pop-Mekhanika, and Kino.