Robert Neal Rudmose Brown was an English academic botanist and polar explorer. He was educated at Dulwich College.
After studying Natural Sciences at Aberdeen University his first academic post was teaching botany at University College, Dundee, at that time part of the University of St Andrews.
At Dundee he met William Speirs Bruce who invited him to join the Scottish National Antarctic Expedition where he catalogued the wildlife of the South Orkney Islands. The Rudmose Rocks, charted by the expedition in 1903, were named for Rudmose-Brown by Bruce. On returning home he became Bruce’s assistant at the Scottish Oceanographical Laboratory, a consultant to the Scottish Spitsbergen Syndicate and vice-president of the International Polar Congress. In 1907 he was appointed a lecturer in geography at Sheffield University and spent several seasons as a field botanist in Svalbard.
When war came he worked at the Intelligence Department of the Naval Staff in London with responsibility for Arctic information, a role he reprised between 1939 and 1945.
In 1920 he became reader in geography at the Manchester University and in 1931 he returned to Sheffield as professor of geography.
He was president of the Institute of British Geographers between 1937 and 1938 and at different times served as the president of the Arctic and Antarctic clubs.