Walston (recorded as Walstan in some sources) was an Anglo-Saxon prince, known for the miracles which occurred during and after his life after he became a farm worker. He is a patron saint of farm animals and agricultural workers, who once visited his shrine at the church at Bawburgh, in the English county of Norfolk. Two sources for his life exist: the De Sancto Walstano Confessore in the Nova Legenda Angliæ, printed by Wynkyn de Worde in 1516, and known as the English Life; and a later Latin manuscript copied in 1658 from a now lost medieval triptych, now in the Lambeth Palace library in London.

Walstan is associated with Norfolk, but the Latin Life gives his birthplace as Blythburgh in Suffolk and not Bawburgh, as stated in the English Life. Described as the son of Benedict and Blida, he is said to have "received a pious education". At the age of 12 he determined to devote his life to one of prayer, and became a farm worker for a man at Taverham, near Norwich. After being told of his forthcoming death, he made his confession, stopped working and instructed that his two bulls were to pull his body in a cart wherever God willed. After his death on 30 May 1016, his hearse left Taverham and passed through Costessey before reaching Bawburgh, where he was buried; along the route springs miraculously appeared. A small chapel dedicated to Walstan was built at Bawburgh.

He is represented by a crown and sceptre with a scythe in his hand and cattle near him. St Walstan's Day is still celebrated each year in Bawburgh, when a special service takes place on the nearest Sunday to 30 May, his day in the calendar of saints.

Walstan is supposed to have been born in 975. He is associated with the English county of Norfolk, but uncertainty surrounds his actual identity and any details of his life. Information that he existed comes from two sources, the earliest of which is De Sancto Walstano Confessore in the Nova Legenda Angliæ, written by the English historian John Capgrave, and known as the Latin Life. Capgrave's Nova Legenda Angliæ was printed by Wynkyne de Worde in 1516; Walstan was included as one of 15 new saints in a compilation that did not form part of the main text. The source for de Worde's information is unknown.

Walstan's story was also described in a manuscript now known as the Lambeth Life (or English Life), which was copied on 29 September 1658 by a scribe from a now lost medieval triptych from Bawburgh church in Norfolk. Now part of manuscript Lambeth MSS 935 at Lambeth Palace library in London, it is recorded as 'The History of St. Walston taken out of an ancient parchment MS, enclosed in a case of 3 pieces of Wainscott about a yard long each of ym', with a drawing of the case. The triptych was owned by a man named Clarke, a Norfolk recusant, who claimed it once came from Bawburgh.

The two Lives were written for two different audiences; the Latin Life was intended for monastic readership, and the later English Life was meant to be read by lay readers, as indicated when stresses the need to commit to working hard for a master.

Despite being declared a saint prior to the Norman conquest of England, no images of Walstan or versions of his life are known to have existed before the Latin Life was written centuries later. The Domesday Book, completed in 1086, provides details of Bawburgh, the site of Walstan's shrine during the Middle Ages, but does not state that the church there was important in any way. According to the historian Tim Pestell, the discovery in 2002 of a lead plaque near to the church—possibly a kind of burial inscription—raises the possibility that "devotion to Walstan had already taken hold at Bawburgh by the time of the Norman conquest".

Walstan has been compared with Godric of Finchale, a Norfolk man who was known for his kindness towards animals.