Pin Mill is a hamlet on the south bank of the tidal River Orwell, on the outskirts of the village of Chelmondiston, on the Shotley peninsula in southern Suffolk.

The east coast has a long history of smuggling, in which Pin Mill and the Butt and Oyster pub allegedly played key parts.

[1] During World War II Pin Mill was home to Royal Navy Motor Launches and to a degaussing vessel created from a herring drifter.

During WWII many yachts were placed for storage west of the hamlet in what were then called 'the saltings,' awaiting the cessation of hostilities.

[4] It is a listed building with bay windows in the bar and restaurant that offer panoramic views of the Orwell estuary.