Family Strombidae belongs to class gastropod where distributed along tropical region especially for Indo Pacific area. One of the species which could be found in coastal area in Maluku is Strombus luhuanus. This species is always consumed by coastal communities. The objective of the present study was to get information on diversity of associated species to S. luhuanus. The study was carried out from May to June 2018 in Oma village. Data were collected by using line transect. The distance between transect line and within quadrat depended on coverage area. Data were identified, then analyzed by using Primer and Past softwares. The results showed that there were 33 species found to be associated to S. luhuanus. Species diversity (H') of associated molluscs indicated moderate category with low dominance (D) and high equitability (e). Species found could be categorized as rare species and common species.