Alexander Gill the Elder (7 February 1565 – 17 November 1635), also spelled Gil, was an English scholar, spelling reformer, and high-master of St Paul's School, where his pupils included John Milton. He was the author of an English grammar, which was written, however, in Latin.

He was born in Lincolnshire 7 February 1565, admitted as a scholar of Corpus Christi College, Oxford, in September 1583, and earned a B.A. in 1586 and an M.A. in 1589. Wood believed that he was a schoolmaster in Norwich, where he was living in 1597. On 10 March 1607-8 he was appointed high-master of St. Paul's School, succeeding Richard Mulcaster. Milton was among his pupils from 1620 to 1625.^[1]

He had two sons, George and Alexander (b. 1597), and a daughter, Annah. George Gill would eventually become ordained.

In 1628, his son Alexander was overheard drinking to the health of John Felton, who had stabbed George Villiers, 1st Duke of Buckingham. Buckingham was a favorite of King Charles I, but hated by the public. Felton was widely acclaimed as a hero for assassinating him.^[2] Gill the Younger was sentenced to have both ears removed and was fined £2000. However, his father intervened directly with William Laud. This effort managed a remission of the punishment inflicted by the Star Chamber.^[3] Alexander Gill the Younger would later become a noted scholar in his own right.

Gill the Elder died at his house in St. Paul's Churchyard 17 November 1635, and was buried 20 November in Mercers' Chapel. He was survived by his wife, Elizabeth.^[1]