Thomas Henry Kearney (27 June 1874 – 19 October 1956) was an American botanist and agronomist known for his work on cotton and date palm breeding, plant taxonomy, and the flora of Arizona.

In the early 1900s Kearney traveled throughout North Africa to study crops such as dates and cotton in arid and alkali soils, and began a decades-long period of cotton-breeding research in Arizona.

[5] The genus Kearnemalvastrum (Malvaceae), containing two species in Latin America, was posthumously named in honor of Kearney.

He and Peebles published the first edition of Arizona Flora in 1951, a comprehensive guide to plants of the state that remains a standard reference a half-century later.

[1] In 1967, botanist David Martin Bates, published a genus of flowering plants (belonging to the family Malvaceae), from Central America as Kearnemalvastrum, in Kearney's honour.