This study focused on the taxonomic study of the gastropod family Naticidae based on specimens at the Sarawak Natural History Museum. A total of 146 specimens were investigated. There are 6 species found in the boxes of the specimen’s collection which are Mammilla melanostoma (Gmelin,1791), Neverita didyma (Röding,1798), Paratectonatica tigrina (Röding,1798), Polinices albumen (Linnaeus,1758), Polinices mammilla (Linnaeus,1758) and Tanea lineata (Röding,1798). A list of specimens of each species is provided in this study. From all the available specimens in the museum, a dichotomous key is formed. It is hoped that this study serves as a basis for further work on gastropods especially the family Naticidae in Sarawak.