Limestone rat

{{Short description|Species of rodent}}

{{speciesbox

| name = Limestone rat

| status = EN | status_system = IUCN3.1

| status_ref = {{cite iucn |author=Kennerley, R. |year= 2016 |title= Niviventer hinpoon |errata= 2017 |page= e.T14821A115124123 |doi=10.2305/IUCN.UK.2016-3.RLTS.T14821A22414152.en|access-date=14 March 2023}}

| genus = Niviventer

| species = hinpoon

| authority = (Marshall, 1976)

| synonyms =

| range_map = Range_Niviventer_hinpoon.png

}}

The limestone rat (Niviventer hinpoon) is a species of rodent in the family Muridae found only in the limestone karsts of Saraburi, Lopburi, Nakhon Sawan provinces, central Thailand. It is listed as an endangered species due to its highly fragmented limestone karst habitat that is currently threatened by mining.