Frank Abney Hastings (Greek: Φραγκίσκος Άστιγξ) (14 February 1794 – 1 June 1828) was a British naval officer and Philhellene.

This paper is of particular interest apart from its importance in the Greek insurrection, for it contains the germs of the great revolution which has since been effected in naval gunnery and tactics.

In substance the memorandum advocated the use of steamers in preference to sailing ships, and of direct fire with shells and hot shot, as a more trustworthy means of destroying the Turkish fleet than fire-ships.

Lack of resources prevented the full application of Hastings's plans; but by the use of his own money, of which he is said to have spent £7,000, he was able to some extent to carry them out.

The great effect produced by his shells in an attack on the sea-line of communication of the Turkish army, then besieging Athens at Oropos and Volos in March and April 1827, was a clear proof that much more could have been done.

He was laid to rest beneath the arsenal of Poros, today a Hellenic Naval Academy, and his heart is preserved in the Anglican Church in Athens.