Splendrillia elongata is a species of sea snail, a marine gastropod mollusk in the family Drilliidae.
The extinct species Splendrillia elongata <small>Beu, 1980</small>, and the extant species Splendrillia elongata <small>Wells, 1995</small>, are homonyms, but not synonyms. A replacement name will have to be established for the junior name.
This marine species occurs off New Caledonia.