| Pristimantis leoni (Lynch, 1976) | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis leopardus Rivera-Correa, Jiménez-Rivillas & Daza-R., 2017 | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis leptolophus (Lynch, 1980) | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis leucopus (Lynch, 1976) | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis leucorrhinus Boano, Mazzotti & Sindaco, 2008 | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis librarius (Flores & Vigle, 1994) | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis lichenoides (Lynch & Rueda-Almonacid, 1997) | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis limoncochensis Ortega-Andrade, Rojas-Soto, Valencia, Espinosa de los Monteros, Morrone, Ron & Cannatella, 2015 | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis lirellus (Dwyer, 1995) | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis lividus (Lynch & Duellman, 1980) | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis llanganati Navarrete, Venegas & Ron, 2016 | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis llojsintuta (Köhler & Lötters, 1999) | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis loeslein Castillo-Urbina, Vences, Aguilar-Puntriano, Glaw & Köhler, 2023 | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis lojanus Székely, Székely, Ordóñez-Delgado, Armijos-Ojeda & Vörös, 2021 | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis longicorpus Kaiser, Barrio-Amorós, Rivas-Fuenmayor, Steinlein & Schmid, 2015 | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis loujosti Yánez-Muñoz, Cisneros-Heredia & Reyes-Puig, 2011 | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis loustes (Lynch, 1979) | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis lucasi Duellman & Chaparro, 2008 | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis lucidosignatus Rödder & Schmitz, 2009 | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis luscombei (Duellman & Mendelson, 1995) | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis luteolateralis (Lynch, 1976) | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis lutitus (Lynch, 1984) | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis lymani (Barbour & Noble, 1920) | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis lynchi (Duellman & Simmons, 1977) | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis lythrodes (Lynch & Lescure, 1980) | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis macrummendozai Acosta-Galvis, 2015 | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis maculosus (Lynch, 1991) | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis mallii Reyes-Puig, Reyes-Puig, Velarde-Garcéz, Dávalos, Mancero, Navarrete, Yánez-Muñoz et al., 2019 | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis marahuaka (Fuentes-Ramos & Barrio-Amorós, 2004) | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis marcoreyesi Reyes-Puig, Reyes-Puig, Rámirez-Jaramillo, Pérez-L. & Yánez-Munoz, 2015 | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis mariaelenae Venegas & Duellman, 2012 | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis marmoratus (Boulenger, 1900) | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis mars (Lynch & Ruiz-Carranza, 1996) | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis martiae (Lynch, 1974) | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis maryanneae Reyes-Puig, Reyes-Puig, Franco-Mena, Jost & Yánez-Muñoz, 2022 | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis matidiktyo Ortega-Andrade & Valencia, 2012 | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis matildae Székely, Eguiguren, Ordóñez-Delgado, Armijos-Ojeda & Székely, 2020 | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis mazar Guayasamin & Arteaga-Navarro, 2013 | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis medemi (Lynch, 1994) | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis melanogaster (Duellman & Pramuk, 1999) | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis melanoproctus (Rivero, 1984) | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis mendax (Duellman, 1978) | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis meridionalis (Lehr & Duellman, 2007) | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis merostictus (Lynch, 1984) | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis metabates (Duellman & Pramuk, 1999) | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis miktos Ortego-Andrade & Venegas, 2014 | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis miltongallardoi Bejarano-Muñoz, Ron, Navarrete & Yánez-Muñoz, 2022 | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis mindo Arteaga-Navarro, Yáñez-Muñoz & Guayasamin, 2013 | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis minimus Terán-Valdez & Guayasamin, 2010 | StrabomantidaeChordata | Accepted speciesRecorded extant |
| Pristimantis minutulus Duellman & Hedges, 2007 | StrabomantidaeChordata | Accepted speciesRecorded extant |
