This paper presents a list of crustacean decapods occuring in the State of Maranhão coast, Brazil, based on the study of collections of the Departamento de Oceanografia (Universidade Federal de Pernambuco) and Laboratório de Hidrobiologia (Fundação Universidade do Maranhão) and on litterature records. There are recorded 149 species (37 species of Natantia and 112 species of Reptantia).
