Øystein "Sid" Ringsby (born 16 February 1961) is a Norwegian bassist[1] best known for playing with Road, TinDrum, The Snakes, TNT, Ken Hensley, Wild Willy's Gang and JORN, Jørn Lande's solo band.

His recording rock career started 1984 as he became a member of the band Road, and since then he has been in bands such as Tindrum, The Snakes, Diezel, Jorn, Vestlandsfanden, Ken Hensley & Live Fire and TNT.

He is recognized as one of the most versatile bassplayers in the Norwegian Rock scene, with a lot of other recording artists to his credit Sid mostly uses Stuart Spector basses, both NS-2 basses made in the US and NS-4 and Euro 4LX models made in the Czech Republic.

He uses Ampeg SVT-CL heads and Ampeg Enclosures.

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