Matthew H. P. Jebb (born 1958) is an Irish botanist and taxonomist specialising in the ant plant genera Squamellaria, Myrmecodia, Hydnophytum, Myrmephytum and Anthorrhiza, as well as the carnivorous plant genus Nepenthes.
Jebb has described several new Nepenthes species, all with Martin Cheek, including: N. argentii, N. aristolochioides, N. danseri, N. diatas, N. lamii, N. mira, and N. murudensis. Jebb and Cheek also raised N. macrophylla to species rank. Jebb and Cheek revised the genus in two major monographs: "A skeletal revision of Nepenthes (Nepenthaceae)" (1997) and "Nepenthaceae" (2001). Jebb also authored the 1991 monograph "An account of Nepenthes in New Guinea".