Greater swamp warbler

{{Short description|Species of bird}}

{{Speciesbox

| name = Greater swamp warbler

| image = Acrocephalus rufescens, Menongue, Birding Weto, a.jpg

| image_caption = A. r. ansorgei at Menongue, Angola

| status = LC

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=BirdLife International |date=2017 |title=Acrocephalus rufescens |volume=2017 |page=e.T22714846A118739711 |doi=10.2305/IUCN.UK.2017-3.RLTS.T22714846A118739711.en |access-date=13 November 2021}}

| genus = Acrocephalus (bird)

| species = rufescens

| authority = (Sharpe & Bouvier, 1877)

| subdivision_ranks = Subspecies

| subdivision_ref = Gill F, D Donsker & P Rasmussen (Eds). 2020. IOC World Bird List (v10.2). doi : 10.14344/IOC.ML.10.2.

| subdivision =

• A. r. senegalensis - Colston & Morel, 1985
• A. r. rufescens - (Sharpe & Bouvier, 1877)
• A. r. chadensis - (Alexander, 1907)
• A. r. ansorgei - (Hartert, 1906)

| synonyms =

| range_map = Acrocephalus rufescens distribution map.png

}}

The greater swamp warbler (Acrocephalus rufescens) is a species of Old World warbler in the family Acrocephalidae. It is found in the African countries of Angola, Botswana, Burundi, Cameroon, Central African Republic, Chad, Republic of the Congo, Democratic Republic of the Congo, Equatorial Guinea, Gabon, Ghana, Kenya, Mali, Mauritania, Namibia, Nigeria, Rwanda, Senegal, South Sudan, Tanzania, Togo, Uganda, Zambia, and Zimbabwe. Its natural habitat is swamps.