Oslo Fluid is a hip-hop group from Oslo, which was formed back in 1994. The group was formed as a result of a meeting between founding members Aslak Hartberg, Gaute Rimehaug, Joacim Vatn and Christian Welsh.

The group inspired by jazzrap projects such as the Jazzmatazz album series and The Roots.
They were among the first hip-hop groups in Norway to use traditional instruments.