Lenton Bluff () is a rock bluff on the north side of the mouth of Jeffries Glacier in the Theron Mountains. First mapped in 1956-57 by the Commonwealth Trans-Antarctic Expedition and named for Ralph A. Lenton, deputy leader of the advance party of the Commonwealth Trans-Antarctic Expedition in 1955-56 and carpenter and radio operator with the transpolar party in 1956-58.
This article incorporates public domain material from the United States Geological Survey document "Lenton Bluff" (content from the Geographic Names Information System).