The Marsh Grassbird (Megalurus pryeri) is a species of Old World warbler in the Sylviidae family. It is found in China, Japan, South Korea, Mongolia, and Russia. Its natural habitat is swamps. It is threatened by habitat loss.

Source

• BirdLife International 2004. Megalurus pryeri. 2006 IUCN Red List of Threatened Species. Downloaded on 10 July 2007.