Lieutenant-Colonel Sir John Macgregor Murray, 1st Baronet (10 April 1745 – 29 June 1822), born John Murray, was a Scottish army officer.
John Murray was born on 10 April 1745, the eldest son of the Major Evan Murray (1710–1778), an officer in the 88th Foot, by his wife Janet, daughter of John Macdonald of Balgony. Murray was part of Clan Gregor (or Macgregor), but had been forced to assume the surname Murray as a result of the persecution of the clan and the outlawing of the name, which began in the 17th century. Murray's father Evan and Evan's elder brothers Robert and Duncan fought against the government in the Jacobite rising of 1745; their father John Og or Oig was regarded as the chief representative of the family. Being the eldest son, Robert succeeded him but died in 1758 (as did his only son), leaving Duncan as his heir. On Duncan's death in 1787, John Murray (being the eldest surviving son of the next brother) became the family's representative and chief of the clan. Murray was created a baronet on 3 July 1795; in 1822, he adopted the surname Macgregor before that of Murray.