Colonel Haviland Le Mesurier (6 February 1856 – 25 November 1913) was an Australian soldier.
He arrived in New South Wales, Australia in 1884, and obtained commission in the Royal Artillery in 1886.
He was posted to the New South Wales Artillery and was the acting adjutant of the 1st Garrison Division between December 1890 and September 1891 and acting staff officer between October 1891 until June 1893.
Promoted to Captain in 1893, he passed the gunnery course at Woolwich and Shoeburyness in 1894, for which he received a first-class certificate with honours.
While the commandant of military forces in South Australia, he died on 25 November 1913.