Boeng Tonle Chhmar is a 145.6 km2 (56.2 sq mi) large multiple use management area in Cambodia bordering Tonlé Sap lake that was established in 1999.

This area is home to a large number of diverse plant, fish, mammal and waterbird species.

The protected area lies within the administrative boundaries of Peam Bang commune, Stoung District, Kampong Thom Province.

The commune contains five floating villages - Pov Veuy, Pechakrei, Peam Bang, Ba Lat and Doun Sdaeng which all lie in the vicinity of the protected area.

[4] Beong Chhmar is home to important colonies of numerous globally or regionally threatened bird species including the brahminy kite (Haliastur indus), painted stork (Mycteria leucocephala), black-necked stork (Ephippiorhynchus asiaticus), lesser adjutant (Leptoptilos javanicus), greater adjutant (Leptoptilos dubius), spot-billed pelican (Pelecanus philippensis), Indian cormorant (Phalacrocorax fuscicollis) and the Oriental darter (Anhinga melanogaster).