Eastern Scottish Omnibuses Ltd. was a bus and coach operator based in Edinburgh, Scotland and a subsidiary of the Scottish Bus Group (formerly SMT Group). Eastern Scottish was formed in June 1985 from the main part of Scottish Omnibuses Ltd., which had itself traded as 'Eastern Scottish' since the 1960s. Following privatisation in 1990 the company traded as 'SMT' reviving the original name of the company (Scottish Motor Traction). It operated until 1994, when it became part of GRT Bus Group plc.