Sir John Curzon, 1st Baronet (c. 1599 – 13 December 1686) was an English politician who sat in the House of Commons of England from 1640 to 1648. He supported the parliamentarian cause during the English Civil War
Curzon was the son of John Curzon of Kedleston Hall (High Sheriff of Derbyshire 1609),and his wife Millicent Sacheveral, daughter of Sir Ralph Sacheverel of Staunton, and widow of Thomas Gell of Hopton. He matriculated at Magdalen College, Oxford on 12 June 1618, aged 18 and was a student of the Inner Temple in 1620. In 1628 he was elected Member of Parliament for Brackley and sat until 1629 when King Charles decided to rule without parliament for eleven years. He inherited the Kedleston estate on his father's death.
Curzon was created a Baronet, of Kedleston in the County of Derby, in both the Baronetage of Nova Scotia on 18 June 1636 and the Baronetage of England on 11 August 1641. He served as High Sheriff of Derbyshire in 1637. In April 1640, he was elected as MP for Derbyshire in the Short Parliament. In November 1640 he was re-elected MP for Derbyshire for the Long Parliament and sat until he was excluded under Pride's Purge in 1648.
Curzon married Patience Crewe, daughter of Sir Thomas Crewe of Stene, Northamptonshire, and had four sons and three daughters.