Vyacheslav (Slava) Ganelin (Hebrew: ויאצ'סלב (סלבה) גנלין, Lithuanian: Viačeslavas Ganelinas, Russian: Вячеслав Шевелевич Гане́лин; born 17 December 1944)[1] is a Lithuanian–Israeli jazz pianist, composer, and pedagogue.

[2] Primarily a pianist, he also plays other keyboards (organ and synthesizer) as well as bass, guitar, and percussions.

He was the leader of the Ganelin Trio, described by critic Chris Kelsey as "arguably the world's greatest free jazz ensemble" of the 1970s and '80s.

[10] In 1999 he founded the Ganelin Trio Priority with soprano saxophonist Petras Vyšniauskas and percussionist Klaus Kugel, which is still active.

Ganelin also performs solo, as well as with various artists including the drummer Arkadiy Gotesman, the singer and dancer Esti Kenan-Ofri, the oud player Gershon Weiserfirer, and the classical pianist Irina Berkovich.