The Sutton Hoo helmet is a decorated Anglo-Saxon helmet discovered during the 1939 excavation of the Sutton Hoo ship-burial. Buried around 625, it is widely believed to have been the helmet of King Rædwald; for whom its elaborate decoration may have given it a secondary function almost akin to a crown. The helmet is "the most iconic object" from one "of the most spectacular archaeological discoveries ever made," and one of the most important Anglo-Saxon artefacts ever found. Its visage, with eyebrows, nose and moustache creating the image of a man who is then joined by a dragon's head to become a soaring dragon with outstretched wings, has become a symbol not only of the Dark Ages, but also "of Archaeology in general." Excavated as hundreds of rusted fragments, the helmet was first displayed following an initial reconstruction in 1945–46, and then again, in its present form, after a second reconstruction in 1970–71.
Along with all the other finds from Sutton Hoo, the helmet was determined by a treasure trove inquest to be the property of the landowner of the site of the ship-burial, Edith May Pretty. She subsequently donated all the objects to the British Museum, where they were conserved and put on display; in 2017 the helmet was on view in Room 41.
The helmet was buried among other regalia and instruments of power as part of a furnished ship burial, probably dating from the early 7th century. Although the man in the grave has not been identified, the contents of the grave point to its being that of a king. It is generally thought most likely that Rædwald, the ruler of the East Angles, is the person buried in the ship, due to the proximity of the royal vill of Rendlesham and as use of the site is believed to have been a time when he held power in England.
The ship had been hauled from the nearby river up the hill and lowered into a prepared trench. Inside this, the helmet was wrapped in cloths and placed to the left of the head of the body. An oval mound was constructed around the ship. Long afterwards, the chamber roof collapsed violently under the weight of the mound, compressing the ship's contents into a seam of earth.
It is thought that the helmet was shattered either by the collapse of the burial chamber or by the force of another object falling on it. However, the fact that the helmet had shattered meant that it was possible to be reconstructed. Had the helmet been crushed before the iron had fully oxidised, leaving it still pliant, the helmet would have been squashed, leaving it in a distorted shape similar to the Vendel and Valsgärde helmets.