John Pocklington (1658–1731) was an English politician, barrister and judge who later settled in Ireland. He was a leading political figure in Huntingdonshire for many years, before becoming a judge of the Court of Exchequer (Ireland). He suffered from chronic ill-health, and also endured the indignity of being imprisoned on the orders of the Irish House of Lords in 1719, during a major constitutional crisis. His descendants, who adopted the name Domvile, were wealthy landowners in south County Dublin.
He was born in Nottingham, son of Oliver Pocklington, a doctor, who came originally from Brington, Cambridgeshire. He went to school in Peterborough, and matriculated from St John's College, Cambridge in 1674. He entered Middle Temple in 1677 and was called to the Bar in 1684.
He held office as second justice of the palatine court of Chester in 1707–13, but his main interest for many years was in politics: he had the reputation for being a staunch Whig, and he was an accomplished canvasser in general elections. He sat in the English House of Commons as member for the borough of Huntingdon in 1695-1698, but failed to secure re-election in 1698. He returned to the Commons as knight of the shire for Huntingdonshire in 1708–13.