William de Skipwith (died after 1392) was a fourteenth-century English judge. He held the office of Chief Baron of the Exchequer 1362-5. He suffered temporary disgrace when he was removed from office for corruption, but was restored to favour, became Lord Chief Justice of Ireland 1370-2, and later returned to the English bench. He appears to have been the only High Court judge to escape impeachment by the English Parliament of 1388.
He was the younger son of William de Skipwith and Margaret Fitzsimon. The Skipwiths were a North Yorkshire family, descended from Robert de Stuteville, lord of the manor of Skipwith in the reign of Henry III; the Fitzsimons were from Ormsby in Lincolnshire, where the de Skipwiths later settled. On the death of his elder brother, William inherited the family estates.
He was probably educated at Grays Inn. He became Sergeant-at-law in 1354 and was knighted and made a justice of the Court of Common Pleas in 1359. He became Chief Baron in 1362, and trier of petitions in Parliament.
In 1365 Skipwith and the Lord Chief Justice, Henry Green, were removed from office for having "acted contrary to law and justice", and having unlawfully obtained large sums of money. Green never held office again but Skipwith was only in temporary disgrace. In 1370 he was appointed Lord Chief Justice of Ireland and received 40 marks for his expenses. In 1373 he is recorded sitting on a commission of gaol delivery in Dublin. In 1376 he was restored to his old seat on the Court of Common Pleas in England, and remained in office until 1388. He regularly appeared in Parliament as a trier of petitions and sat on various judicial commissions.