List of Nepenthes species

This list of Nepenthes species is a comprehensive listing of all known species of the carnivorous plant genus Nepenthes. It includes 179 recognised extant species, 2 incompletely diagnosed taxa, and 3 nothospecies. Three possible extinct species are also covered.

The official IUCN conservation status of each species is taken from the latest edition of the IUCN Red List.^[1] Unofficial assessments based on the IUCN criteria are also included, but are presented in italics. Unless otherwise noted, taxonomic determinations and all other information are sourced from Stewart McPherson's two-volume Pitcher Plants of the Old World, published in 2009.^[2] Where recent literature provides an altitudinal distribution that falls outside the range given in Pitcher Plants of the Old World, the discrepancy is noted.

All major islands within a species's geographic range are included. Smaller surrounding islands are listed separately under "Minor islands", though these lists are not exhaustive. In the case of archipelagos such as the Philippines, the individual islands to which the species is native are shown in brackets.

Authorities are presented in the form of a standard author citation, using abbreviations specified by the International Plant Names Index.^[3] Years given denote the year of the species's formal publication under the current name, thus excluding the earlier basionym date of publication if one exists.