Lady Harriet Anne Thiselton-Dyer (née Hooker; 1854–1945) was a British botanical illustrator.

Harriet Anne Hooker was born in 1854 to the botanist and explorer Joseph Dalton Hooker and Frances Harriet Henslow, who was the daughter of botanist and Cambridge University professor John Stevens Henslow.

In 1877, she married the botanist William Turner Thiselton-Dyer (later knighted), with whom she had a son and a daughter.

[1] Thiselton-Dyer belonged to a generation of English women who transformed their interest in botany into professional careers.

In 1996, some of these copies were published to accompany an article on Rodrigues that appeared, fittingly enough, in Curtis's Botanical Magazine.