Mangelia shepstonensis is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.
This is a taxon inquirendum.
The length of the shell attains 4.3 mm, its diameter 2 mm.
The shell closely resembles Lienardia siren <small>(E. A. Smith, 1904)</small> and Drillia tholos <small>Barnard, 1958</small>
This marine species occurs off Durban, South Africa.