The present study is an annotated list of the marine crustaceans (Decapoda and Stomatopoda) from Golfo Dulce, Costa Rica, collected during the RV Victor Hensen Cruise 1993-1994, at depths ranging from 20 to 260 m. Stomatopoda was represented by one family and two species. Decapoda was represented by 12 families and 21 species. Two new records for Costa Rica, Cancer johngarthi and Lysmata californica are reported. This increases the reported marine crustaceans of Golfo Dulce to three species of Stomatopoda and sixty-six of Decapoda (a complete check list is included). A list of species reported in the literature from the gulf is also included.Una familia con dos especies de Estomatópodos y 12 familias con 21 especies de Decápodos fue recolectado por el buque RV Victor Hensen en Golfo Dulce durante diciembre 1993 y febrero 1994. Los especímenes se recogieron en un ámbito de 20 a 260 m de profundidad. De las 23 especies de crustaceos, dos son nuevos informes para Costa Rica, Cancer johngarthi y Lysmata californica. Se incluye una lista adicional de los crustáceos previamente mencionados para el Golfo Dulce.