Bradley Moore Davis (November 19, 1871 – March 13, 1957) was an American botanist.
After graduating from Leland Stanford Junior University, in 1892, he studied at Harvard, Bonn, and Naples.
For 11 years he taught at the University of Chicago, from 1902 to 1906 as assistant professor of plant morphology.
He held a position at the Marine Biological Laboratory, Woods Hole, Mass.
In 1911 he became assistant professor of botany at the University of Pennsylvania, and he was secretary of the American Society of Naturalists in 1914.