Colonel Sir Jonathan Roberts Davidson, CMG, TD, MSc, MICE (1874–1961) was a British civil engineer and army officer. Davidson pursued a professional career as an engineer which resulted in him being elected president of both the Institution of Civil Engineers and of the Smeatonian Society of Civil Engineers. 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.