Niviventer is a genus of rodent in the family Muridae endemic to Southeast Asia. It contains the following species:
Anderson's white-bellied rat, Niviventer andersoniBrahma white-bellied rat, Niviventer brahmaCameron Highlands white-bellied rat, Niviventer cameroniChinese white-bellied rat, Niviventer confucianusCoxing's white-bellied rat, Niviventer coningaDark-tailed tree rat, Niviventer cremoriventerOldfield white-bellied rat, Niviventer culturatusSmoke-bellied rat, Niviventer ehaLarge white-bellied rat, Niviventer excelsiorMontane Sumatran white-bellied rat, Niviventer fraternusChestnut white-bellied rat, Niviventer fulvescensLimestone rat, Niviventer hinpoonLang Bian white-bellied rat, Niviventer langbianisNarrow-tailed white-bellied rat, Niviventer lepturusHainan white-bellied rat, Niviventer lotipes (Allen, 1926) (formerly in N. tenaster)White-bellied rat, Niviventer niviventerLong-tailed mountain rat, Niviventer rapitTenasserim white-bellied rat, Niviventer tenaster