Frampton Marsh is a nature reserve in Lincolnshire. The reserve is situated on the coast of The Wash, some 4 miles from the town of Boston, between the outfalls of the Rivers Welland and Witham, covering an area of mature saltmarsh known as The Scalp, and near the village of Frampton. Part of the reserve is managed by the Lincolnshire Wildlife Trust; part by the RSPB. Frampton Marsh is promoted to tourists by Boston Borough Council as part of the 'Boston Wash Banks'.

You will see birds here at any time, but high tides from autumn to spring are best for roosting wading birds: the bigger the tide the better the spectacle. In winter there are brent geese, birds of prey, twites, corn buntings, rock pipits and, with luck, Lapland buntings. In summer, large numbers of redshanks breed at an exceptionally high density. Other breeding species include oystercatchers, skylarks and reed buntings. Marsh harriers can frequently be seen hunting over the reserve.