Adrian Hardy Haworth (19 April 1767, in Hull – 24 August 1833, in Chelsea) was an English entomologist, botanist and carcinologist.

His research work was aided by his use of the library and herbarium of his friend Sir Joseph Banks (1743–1820) and regular visits to the Royal Botanic Gardens, Kew.

He was the author of Lepidoptera Britannica (1803–1828), the most authoritative work on British butterflies and moths until Henry Tibbats Stainton's Manual in 1857.

[4] The British entomologist John Curtis named a moth of the family Noctuidae 1829 in honour of Adrian Hardy Haworth Celaena haworthii.

In 1812 he wrote the first paper in Volume 1 of the Transactions of the Entomological Society of London, a review of previous work on British insects.