Johan De Farfalla[1] (born 3 June 1971 in Stockholm) is a Swedish bass player.
He originally joined Opeth in 1991 when its lineup was David Isberg on vocals, Mikael Åkerfeldt and Kim Pettersson on guitar, and Anders Nordin on drums.
De Farfalla rejoined Opeth initially as a session bassist for their first album Orchid (1995), but subsequently became an official member again.
After touring in support of their second album Morningrise (1996), De Farfalla was fired by Åkerfeldt who cited that he was not a good fit.
He now works as a manager at JSC (Järfälla Språk Center) and lives in Stockholm with his three children.