Nepenthes mantalingajanensis /nɪˈpɛnθiːz mæntəˌlɪŋɡəhɑːˈnɛnsɪs/ is a tropical pitcher plant known only from the summit region of Mount Mantalingajan, the highest point on the Philippine island of Palawan, after which it is named.

[3] Nepenthes mantalingajanensis was first collected on Mount Mantalingajan in 1992, during a botanical expedition to the summit of the mountain by botanists G. C. G. Argent and E. M.

[6] Depending on environmental conditions, N. mantalingajanensis may grow as a compact rosette or produce an upright stem 30–60 cm tall.

[3] Observations of hundreds of plants across three habitat types found no evidence of climbing stems or upper pitchers in this species, suggesting that aerial traps are either very rare or absent altogether.

[3] It has been speculated that N. mantalingajanensis may produce upper pitchers only in deep shade or if provided with sufficient vegetation to support a climbing stem, as is the case with the closely related N. deaniana and N. mira.

[3] The vegetative parts of the plant are mostly glabrous, although an indumentum of velvety, brown hairs may be present on the spur.

The altitudinal distribution of this species extends from 1700 m above sea level to the summit at 2085 m.[1][3] The typical habitat of N. mantalingajanensis is upper montane forest and scrub vegetation.

[5] In his 2009 book, Pitcher Plants of the Old World, Stewart McPherson writes that N. mantalingajanensis is "not currently threatened" owing to its extensive populations on Mount Mantalingajan and the remote nature of the mountain.

Mount Mantalingajan is already afforded Protected Area status and there is local interest in having it recognised as a UNESCO World Heritage Site.

[3] Nepenthes mantalingajanensis shows affinities to members of the N. villosa complex of species, which are localised on ultramafic soils in the north of Borneo and in the highlands of Palawan and Mindanao.