Daovantien’s limestone rat (Tonkinomys daovantieni) is a genus of Muridae rodent native to northeastern Vietnam.

It was first discovered in a forested talus habitat in the Huu Lien Nature Reserve, Lang Son Province.

[2] The genus is destiguished from other Indomalayan murids by "semispinous, dense, grayish black fur covering upperparts; a dark gray venter; gray ears; a thick, bicolored tail considerably shorter than length of head and body; and large, extremely bulbous footpads".

Other cranial features as well as molar occlusal patterns resemble species of the Niviventer, Chiromyscus, and Saxatilomys genera native to the Indomalayan region.

[2] The genus is petricolous, meaning it lives in a rocky habitat, and was found only in talus composed of large limestone blocks.