George Hadley (died 1798) was an English army officer of the East India Company, now known as an orientalist for his early work on Hindustani.
Hadley was appointed a cadet in the East India Company's service in 1763, and gained his first commission in the Bengal Presidency on 19 June of that year.
[1] As an army commander, Hadley was in charge of a company of sepoys, but initially had no knowledge of their language, Hindustani, which was then colloquially known in English as "Moors".
[1] Hadley's grammar was aimed at the current British needs in Bengal, to get Indians to work for them, without the mediation of a munshi.
His theory of a Tartar origin was rejected, and his work came in for criticism from John Borthwick Gilchrist, who objected to the version of Hindustani it reported.