Otto Vernon Darbishire (16 March 1870 – 17 October 1934) was a British botanist who specialised in marine algae and lichens.
Born in Conwy (Caernarfonshire, Wales), he was educated at several places and eventually graduated from the University of Oxford.
First in Kiel University in 1897, where he earned a PhD;[1] during this time he was an assistant to Johannes Reinke, professor of botany.
At Bristol he was the first Melville Wills Professor of Botany, from the years 1919 to 1934.
[1] He has been credited for having introduced the terms amphithecium and parathecium in an 1898 monograph on the lichen genus Roccella.