James Campbell (British Army officer)

Lieutenant-General Sir James Campbell KB, of Lawers (c. 1680 – 2 May 1745) was a Scottish officer of the British Army.

He was the third and youngest son of James Campbell, 2nd Earl of Loudoun by his wife Margaret, daughter of Hugh Montgomerie, 7th Earl of Eglinton; Hugh Campbell, 3rd Earl of Loudoun was his elder brother.

Campbell was married by contract dated 29 March 1720 to Jean, eldest daughter of David Boyle, 1st Earl of Glasgow by his second wife Jean, daughter and heiress of William Mure of Rowallan. They had two children: Jean Campbell died on 19 December 1729 and was succeeded in her estate of Rowallan by her son, who assumed the name of Mure. On 27 April 1782 he also succeeded his cousin as fifth Earl of Loudoun.
 * James, born 11 February 1726, and
 * Margaret, born 17 May 1727.