The Liberian swamp eel (Monopterus boueti) is a species of fish in the Synbranchidae family. It is indigenous to Liberia. It has also been found in Sierra Leone, with an unconfirmed report from Côte d'Ivoire. It was first described by Jacques Pellegrin in 1922 as Typhlosynbranchus boueti. Due to the deficiency in data, the species has not been classified with respect to endangerment.