Nepenthes treubiana ( /nɨˈpɛnθiːz trɔɪbiˈɑːnə/; after Melchior Treub) is a tropical pitcher plant native to Western New Guinea and possibly also the island of Misool.
This species occurs on the cliffs of the McCluer Gulf and in coastal regions of the Fakfak peninsula. Although it has been reported from Misool in the past, geographer Stewart McPherson was unable to find any plants during a recent trip to the island (although he did find N. sp. Misool).
Nepenthes treubiana has no known natural hybrids. No forms or varieties have been described.