This paper deals with the decapods crustaceans from Restinga island (Paraíba State, Brazil). A list of species collected from September 1977 to March 1978 and some ecological notes are given. Those following species were found in the island: Macrobrachium acanthurus (Wiegmann). Alpheus heterochaelis Say, Upogebia omissa Gomes-Corrêa, Petrolisthes armatus (Gibbes), Clibanarius vitatus (Bose), Clibanarius sclopetarius (Herbst), Callinectes danae Smith, Callinectes exasperatus (Gerstaecker), Callinectes bocourti. A.Milne Edwards, Callinectes sp., Panopeus herbstii. A. Milne Edwards, Cytoplax spinidentata (Benedict), Goniopsis cruentata (Latreille), Aratus pisonii (Milme Eawards), Pachygrapsus gracilis (Saussure), Pachygrapsus transversus Gibbes), Sesarma rectum Randall, Sersama angustipes Dana, Cardisoma guanhunti Latreille, Uca leptodactyia Rathbun, Uca maracoani Latreille), Uca rapax (Smith), Uca panema Coelho, Uca thayeii Rathbun, Uca vocator Herbst), Uca cumulanta Crane, Ocypode quadrata (Fabricius), Ucides cordatus (Linnaeus) e Calappa ocelata Holthuis.