Bure Marshes National Nature Reserve is a national nature reserve (NNR) in Norfolk, England. Created in 1958, the reserve covers 451.5 hectares of wetland within the floodplain of the River Bure.
The reserve contains multiple wetland habitats including broads, dykes, reed beds, fens, and wet woodlands. Broads are shallow lakes that formed from medieval peat excavations that flooded in around the 14th century. There are four broads in Bure Marshes NNR, Hoveton Great Broad, Ranworth Broad, Cockshoot Broad, and Decoy Broad.
Bure Marshes NNR is contained within the boundaries of Broads National Park, the Bure Broads and Marshes SSSI, The Broads Special Area of Conservation, and the Broadland Special Protection Area which is a Ramsar site.