Johnstone's mastiff bat

{{Short description|Species of bat}}

{{Speciesbox

| image =

| status = DD

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=Hutson, A.M. |author2=Schlitter, D. |author3=Suyanto, A. |author4=Kingston, T. |author5=Senawi, J. |date=2016 |title=Otomops johnstonei |volume=2016 |page=e.T15647A22112472 |doi=10.2305/IUCN.UK.2016-2.RLTS.T15647A22112472.en |access-date=16 November 2021}}

| genus = Otomops

| species = johnstonei

| authority = Kitchener, How & Maryanto, 1992

| range_map=Distribution of Otomops johnstonei.png

| synonyms =

}}

Johnstone's mastiff bat (Otomops johnstonei) is a species of bat in the Molossidae family endemic to Indonesia.