Aulay Macaulay (1758– 1819) was a Scottish writer and clergyman of the Church of England.
He was the eldest son of John Macaulay, by his second wife Margaret Campbell; Colin Macaulay and Zachary Macaulay were brothers, and Thomas Babington Macaulay was his nephew. He graduated M.A. at Glasgow University in 1778. After acting for three years as tutor to the sons of Joseph Foster Barham I at Bedford, he took holy orders, and obtained a curacy at Claybrooke, Leicestershire. He remained there until 1789, when he became rector of Frolesworth; but then resigned the living after a year, in 1790. He had been admitted as a sizar in 1785 at Sidney Sussex College, Cambridge, but is not known to have graduated.
In 1793 Macaulay went on a tour in Holland and Belgium, an account of which he wrote for the 1793–4; and next year, as travelling tutor to a son of Sir Walter Farquhar, he visited the court of Charles William Ferdinand, Duke of Brunswick-Wolfenbüttel, and gave English lessons to his daughter Caroline of Brunswick, who later married the future George IV of the United Kingdom. In 1796, after his return, Macaulay was presented by his brother-in-law Thomas Babington to the living of Rothley.
In 1815 Macaulay made another tour on the continent, and four years later, on 24 February 1819, died of apoplexy.
Macaulay published sermons, and: