Sir John Magill, 1st Baronet (ante 1639 – 18 January 1700) was an Anglo-Irish politician.
On 5 November 1680 he was made a knight bachelor by James Butler, 1st Duke of Ormond.
On 10 November 1680 he was created a baronet, of Gill Hall in the Baronetage of Ireland.
Between 1692 and 1693 Magill was the Member of Parliament for Hillsborough in the Irish House of Commons.
Magill had no sons by either marriage and his title became extinct upon his death.