The present paper reports on the occurrence of six species of Cocculinidae and three species of Pseudococculinidae off the Caribbean coast of Colombia. Cocculina messingi McLean & Harasewych, 1995, Cocculina emsoni McLean & Harasewych, 1995 Notocrater houbricki McLean & Harasewych, 1995 and Notocrater youngi McLean & Harasewych, 1995 were not previously known to occur within the of the Caribbean Sea, while Fedikovella beanii (Dall, 1882) had been reported only from the western margins of the Atlantic Ocean, including the lesser Antilles. New data are presented on the external anatomy and radular morphology of Coccocrater portoricensis (Dall & Simpson, 1901) that supports its placement in the genus Coccocrater. Cocculina fenestrata n. sp. (Cocculinidae) and Copulabyssia colombia n. sp. (Pseudococculinidae) are described from the upper continental slope of Caribbean Colombia.