Sir John Elwill, 1st Baronet (c. 1640 – 25 April 1717) was an English aristocrat and politician.
He was the eldest son of Exeter grocer John Elwill and his wife Rebecca Pole, and was baptised on 24 September 1643.
[2] He was knighted at Kensington on 28 April 1696, and was created a baronet in the Baronetage of Great Britain on 25 August 1709.
He then married Anne Leigh, of Egham in Surrey.
He was succeeded by his eldest son, John, who died without issue on 10 September 1727.