Bottom-trawling, aimed at shrimp, is considered highly predatory due to the accidental catching of numerous organisms, called by accompanying fauna. There are several studies on the impacts of this fishery, but the great majority directed to the characterization of the ichthyofauna and accompanying carcinofauna. Based on the context and due to the need for knowledge about the malacofauna associated with the bottom trawling trawling of the Penaeidae family in the Northern Region of Brazil, this study aimed to characterize the molluscs caught in the industrial shrimp fishery in the region. A total of 2241 individuals were collected, the trawl fishery malacofauna in the North Coast of Brazil, was represented by 37 families and 56 species belonging to five taxa Bivalvia, Gastropoda and Cephalopoda, Polyplacophora and Scaphopoda being the most representative the class of the Gastropoda with 28 species, followed by classes Bivalvia 23 species and Cephalopoda with three species demisis classes with one species.