Hugh Andrew Johnstone Munro of Novar (13 February 1797 - 22 November 1864) was a Scottish art collector.
H.A.J. Munro of Novar was born in London, the nephew of Hector Munro, 8th of Novar, and the son of Sir Alexander Munro (d. 1810). On his father's death in 1810 he became the head of the Munros of Novar and succeeded to the estate of Novar House in Ross-shire. An elder brother was mentally unsound. He entered Christ Church, Oxford as a gentleman commoner in 1814 and left three years later with no degree. Munro remained unmarried; among his several illegitimate children was Hugh Andrew Johnstone Munro (b. 1819), the classical scholar.
He was shy and, though a Tory, devoted himself more to art than to politics at a time when the Highland Clearances were a live issue. Nevertheless, in 1820, he cleared 500-600 people from his estate in Culrain to make way for sheep.
He died suddenly at Novar without leaving a will. His papers, though carefully kept by him, have not been preserved.
Munro was one of the most important patrons of J. M. W. Turner, as well as being the painter's close friend and (in 1836) traveling companion. He himself was a gifted amateur artist in the style of Greuze and exhibited in London. He commissioned Turner's paintings Venice from the Porch of Madonna della Salute (1837) and The Lake of Zug (1843), neither of which pleased him. He gave The Lake of Zug to John Ruskin, his rival as a collector of Turner, who records, "Mr. Munro thought the Zug too blue and let me have it." On another occasion, Munro traded Fluelen: Morning Looking Towards the Lake (1845), another watercolor Swiss subject he had commissioned, for Storm in the St. Gotthard Pass: The First Bridge Above Altdorf (1845), which Ruskin had commissioned but disliked. Turner appointed him one of his executors in 1849. Curiously, a very distant kinsman of Munro's, Dr. Thomas Monro, had been one of the earliest supporters of the young Turner and, according to Ruskin, had exercised a significant influence on his art.