Martin Roy Cheek (born 1960) is a botanist and taxonomist at the Royal Botanic Gardens, Kew.
Cheek attended the University of Reading, graduating with a B.Sc. in 1981 and a M.Sc. in 1983. He earned his DPhil at the University of Oxford in 1989.
With Matthew Jebb, Cheek revised the pitcher plant genus Nepenthes in two major monographs: a skeletal revision in 1997 and a more in-depth treatment of the Malesian species for Flora Malesiana in 2001.
In these and other works, Cheek has described a number of species new to science, often in collaboration with Jebb. These include: N. abalata,N. abgracilis,N. alzapan,N. argentii,N. aristolochioides,N. cid,N. danseri,N. diatas,N. extincta,N. hurrelliana,N. kitanglad,N. kurata,N. lamii,N. leyte,N. mira,N. murudensis,N. negros,N. ramos,N. robcantleyi,N. samar,N. thai, and N. ultra. Cheek and Jebb also raised N. macrophylla to species rank.