Matthew Hilary Peter 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,[1] N. aristolochioides,[1] N. danseri,[1] N. diatas,[1] N. lamii,[1] N. mira,[2] and N. murudensis.

[1] Jebb and Cheek also raised N. macrophylla to species rank.

Following a 5-year appointment as Director of the Christensen Research Institute at Madang, Papua New Guinea, Matthew took up a 2-year post-doc position at Trinity College Dublin.

Jebb is currently the Director of the National Botanic Gardens based in Glasnevin.