The Witham Shield is an Iron Age decorative bronze shield facing of La Tène style, dating from about the 4th century BC. The shield was discovered in the River Witham in the vicinity of Washingborough and Fiskerton in Lincolnshire, England in 1826. Further excavations at a nearby site have revealed posts interpreted as the foundation for a causeway, as well as artefacts including a sword, spears and part of a human skull with a sword fragment lodged within. The shield is now in the British Museum.