Tanzanian vlei rat

{{Short description|Species of rodent}}

{{speciesbox

| name = Tanzanian vlei rat

| status = LC

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=Relton, C. |date=2021 |title=Otomys lacustris |volume=2021 |page=e.T45067A22395972 |url=https://www.iucnredlist.org/species/45067/22395972|access-date=16 November 2021}}

| genus = Otomys

| species = lacustris

| authority = G.M. Allen & Loveridge, 1933

| synonyms =

}}

The Tanzanian vlei rat (Otomys lacustris) is a species of rodent in the family Muridae.

It is found in Kenya, Malawi, and Tanzania.

Its natural habitats are subtropical or tropical high-altitude grassland and swamps.

It is threatened by habitat loss.