Oliva hilli is a species of sea snail, a marine gastropod mollusk in the family Olividae, the olives.
Shell size 10-15 mm, generally: the holotype is 16 mm. long.
Locus typicus: Neiafu, Vava'u Islands, Tonga.
Pacific Ocean: Tonga and New Caledonia, from depths 2 metres - 80 metres.