Never have so many new tropical pitcher plants (Nepenthes) been discovered as during the three years since the publication of the first complete monograph of the genus in 2009. Among them are eighteen new species, two revised species, one new variety, and two new but incompletely diagnosed taxa from across Borneo, Indochina, New Guinea, the Philippines and Sulawesi. The newly discovered plants include many of largest, most extraordinary and colourful carnivorous plants ever found. This work documents all of the new Nepenthes, in many cases for the very first time.