Colin Macdonald Gilray OBE MC (17 March 1885 – 15 July 1974) was a Scottish-born rugby union player, soldier and educationalist.

He represented both New Zealand and Scotland in rugby union and won the Military Cross during World War I as a captain in the British Rifle Brigade.

[2] The family moved to Dunedin, New Zealand, in 1890 after Thomas Gilray was appointed professor of English language and literature at the University of Otago in 1889.

[1][3] Awarded a Rhodes Scholarship in 1907, Gilray went to University College, Oxford, graduating Master of Arts with second-class honours in 1910.

[7] Gilray enlisted in the British Army in early 1916,[1] and was commissioned as a second lieutenant in the 13th (Service) Battalion, Rifle Brigade, in July that year.

[1] From 1921 until 1935, when he was transferred to the retired list, Gilray was a captain in the 2nd Battalion Otago Regiment, New Zealand Territorial Force.

[1] While visiting Queenstown in September 1931, Gilray sustained a fracture dislocation of his left ankle when it was run over by the car that he was pushing in an attempt to make it start.

[18] In 1934, after 12 years at John McGlashan, Gilray took up the post of principal of Scotch College, Melbourne,[1] following the death of the incumbent, William Still Littlejohn.

[1] Gilray was a member of the standing committee of the Headmasters' Conference of the Independent Schools of Australia (HCISA) from 1939 to 1952, and served as its chairman between 1949 and 1952.

[20] In the Australian 1951 New Year Honours Gilray was appointed an Officer of the Order of the British Empire (OBE) in recognition of his services as principal of Scotch College.

Colin Macdonald Gilray died in East Melbourne on 15 July 1974, and he was buried with his wife at Box Hill Cemetery.