Marginella hernandezi is a species of sea snail, a marine gastropod mollusc in the family Marginellidae, the marginellids.[1]
The length of the shell attains 9.4 mm.
The shell of the species has grey to black thin lines and its outer part ranges from white to grey.
This species occurs off and is endemic to São Tomé and Príncipe Islands, Gulf of Guinea, West Africa.