Middendorff's grasshopper warbler

{{Short description|Species of bird}}

{{Speciesbox

| name = Middendorff's grasshopper warbler

| status = LC

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=BirdLife International |date=2016 |title=Helopsaltes ochotensis |volume=2016 |page=e.T22714669A94423719 |doi=10.2305/IUCN.UK.2016-3.RLTS.T22714669A94423719.en |access-date=12 November 2021}}

| image = Wiki-simasennyu.jpg

| image_caption = In Hokkaido, Japan

| range_map =Locustella ochotensis distribution map.png

| range_map_caption = Distribution of Middendorff's grasshopper warbler {{leftlegend|#FFFF00|Breeding|outline=gray}} {{leftlegend|#0000FF|Non-breeding|outline=gray}}

| genus = Helopsaltes

| species = ochotensis

| authority = (Middendorff, 1853)

| synonyms = Locustella ochotensis

}}

Middendorff's grasshopper warbler (Helopsaltes ochotensis) is a species of Old World warbler in the family Locustellidae.

It breeds in eastern Siberia to northern Japan, Kamchatka Peninsula and northern Kuril Islands. It winters in the Philippines, Borneo and Sulawesi and in small numbers in China, Hong Kong, South Korea, Malaysia, Taiwan and the U.S.A.

The common name commemorates Alexander Theodor von Middendorff (1815–1894), a German–Russian naturalist who traveled extensively in Siberia.{{cite book|last=Beolens|first=Bo|title=Whose Bird? Men and Women Commemorated in the Common Names of Birds|year=2003|publisher=Christopher Helm|location=London|page=234|author2=Watkins, Michael}}