Kelvin Scottish Omnibuses Ltd was a bus operating subsidiary of the Scottish Transport Group based in Bishopbriggs, Strathclyde, Scotland. It was formed in March 1985 from parts of Walter Alexander & Sons (Midland) Ltd and Central SMT, initially with six depots and a varied fleet of 381 vehicles.

The Scottish Bus Group (SBG) was a state-owned group of bus operators covering the whole of mainland Scotland.