Lieutenant General Sir William Montgomerie Thomson KCMG CB MC (2 December 1877 – 23 July 1963) was a senior British Army officer who became military governor of Baku in 1918.

[1] On 16 November 1918, in Bandar-e Anzali, Thomson met with Nasib Yusifbeyli, Musa bey Rafiyev and Ahmet Ağaoğlu, representatives of Musavat, the governing party of the Azerbaijan Democratic Republic (ADR).

He denied that the British would interfere in internal affairs: "The principle of self-determination of peoples decided at the Paris Peace Conference from which Azerbaijan will not be excluded".

[2] Thomson arrived in Baku the next day with about 2,000 soldiers of the British Indian Army and a detachment of Russian troops commanded by Nikolai Baratov.

He is buried in Kinloss Abbey but is also memorialised on a family stone within the eastern enclosure at St Machar's Cathedral.