Aditya Narayan Purohit (born 30 July 1940) is an Indian scientist and professor who has mainly worked on ecophysiology of tree species and physiology of high altitude medicinal plants.

[2] He was also the Director of Govind Ballabh Pant Institute of Himalayan Environment and Development from 1990 to 1995.

After joining HNB Garhwal University, Purohit initiated work on high-altitude plants.

He and his associates have come up with the cultivation technology for Aconites, alpine and sub-alpine plants of very high medicinal value, where yield is increased 10 to 12 fold.

Garhwal University in 2002, he was offered the special chair by Government of Uttarakhand to advice on conservation, development and cultivation of medicinal and aromatic plants in the State.