Sir John Lowther, 1st Baronet, of Swillington

Sir John Lowther, 1st Baronet (1 April 1759 – 19 March 1844) of Swillington, Yorkshire was an English landowner and Member of Parliament.

He was the second son of Sir William Lowther, 1st Baronet and educated at Westminster School and Trinity College Cambridge.

On 4 September 1790, he married Lady Elizabeth Fane (d. 1844), daughter of John Fane, 9th Earl of Westmorland. They had four children:

• Sir John Henry Lowther, 2nd Baronet (1793–1868)
• George William Lowther (17 October 1795 – 1805)
• Sir Charles Hugh Lowther, 3rd Baronet (1803–1894)
• Elizabeth Lowther (d. 2 October 1863), unmarried

He purchased the estate at Wilton Castle in about 1806 and built a new mansion house there. At some time after his elder brother was created Earl of Lonsdale, the Swillington estate was made over to John, who was himself created a baronet on 3 November 1824.

He died in 1844 and was succeeded by his eldest son John Henry Lowther.