Colonel Sir Jonathan Roberts Davidson CMG TD MICE (29 May 1874 – 21 June 1961) was a British civil engineer and army officer.

He also served as an officer in the Territorial Force where he saw combat as a battalion commander in the First World War with the Liverpool Scottish and was twice wounded in action.

During this time, the battalion was called up for regular service in the First World War during August 1914, leaving Britain for Belgium on 1 November 1914.

[10] During the spring of 1915, whilst at Zillebeeke, Davidson used his civil engineering expertise to significantly improve his battalion's trenches.

[13] The battalion's medical officer, Noel Chavasse, was also wounded during the battle whilst rescuing injured soldiers and in doing so won the unit's first Victoria Cross (VC).

[17] He relinquished his army commission during demobilisation on 30 September 1921, retaining his rank and being entitled to continue to wear his uniform.