Dingle Marshes is a 93-hectare (230-acre) wildlife reserve on the North Sea coast of the English county of Suffolk.

[1][2] They are owned jointly by the RSPB and Suffolk Wildlife Trust and are managed by these two organisations and Natural England.

[12] These provide breeding habitats for birds such as bitterns, marsh harriers and bearded tits as well as mammals such as European otters and water vole and over-wintering locations for species such as pied avocets, white-fronted geese, northern lapwings and redshanks.

[13][14] The shingle bank was breached in 2006 and 2007 leading to concerns that vulnerable freshwater habitats could be lost, including the breeding grounds of species such as bitterns.

[16] The reserve is accessed from the south at Dunwich beach where a car park and other facilities are maintained by East Suffolk council.