Afghanistan (P), Bangladesh, Belarus (B), Bhutan, Estonia (B), Finland (B), India, Iran [Islamic Republic of] (B), Kazakhstan (B), Kyrgyzstan (B), Latvia (B), Lithuania (B), Mongolia (B), Myanmar, Nepal, Pakistan, Russia (Asian) (B), Russia (Central Asian) (B), Russia (European) (B), Sri Lanka, Sweden (B), Tajikistan (B), Turkmenistan (B), Uzbekistan (B).
Vagrant to Bahrain, Belgium, Bulgaria, Cyprus, Denmark, France, Germany, Gibraltar, Hong Kong (China), Ireland, Israel, Italy, Jordan, Kuwait, Malta, Netherlands Antilles, Nigeria, Norway, Oman, Romania, Spain, Switzerland, Syrian Arab Republic, United Arab Emirates, United Kingdom.
Breeds in eastern Europe (mainly southern Finland, Baltic States, Belarus) east to central Russia (upper R Lena and south-eastern Altai), south to northern Afghanistan. Non-breeding southern and eastern Indian Subcontinent and Myanmar.
 
Population
Estimated population is 10,000,000 - 50,000,000 (2010).
Blyth's Reed Warbler (Acrocephalus dumetorum) [XC656466]
by bert de bruin from Herdla, Ask\u00f8y, Vestland, Sweden (song)
Blyth's Reed Warbler (Acrocephalus dumetorum) [XC819725]
by Joost van Bruggen from R\u00e4tsepa, P\u00f5hja-P\u00e4rnumaa Rural Municipality, P\u00e4rnu County, Estonia (imitation, song)