Georg Heinrich Leopold Dippel (4 August 1827 – 4 March 1914) was a German botanist.
He was the son of a royal Bavarian forester, Carl Friedrich Peter Dippel, and Sussanna Purpus.
He continued his studies in Jena under the tutelage of Matthias Jacob Schleiden.
Under him, he learned more extensively about botany and pioneered his work in microscopy and his research on the structure of plant's bodies.
He brought many foreign trees and shrubs, mostly collected by his first cousin Carl Albert Purpus in North America and Mexico, and sent them to Germany.