A taxonomic revision is presented for the epiphyllous liverwort genus Odontolejeunea (Lejeuneaceae subf. Ptychantoideae). Three species are accepted: O. decemdentata (Spruce) Steph.; O. lunulata (Web.) Schiffn. and O. rhomalea (Spruce) Steph. All three species occur in tropical America, and O. lunulata occurs also in tropical Africa.