Sir John Dormer was an English landowner and politician who sat in the House of Commons

House of Commons of England

The House of Commons of England was the lower house of the Parliament of England from its development in the 14th century to the union of England and Scotland in 1707, when it was replaced by the House of Commons of Great Britain...

  in two periods between 1604 and 1622.

Dormer was the son of William Dormer of Thame, Oxfordshire and grandson of Sir Michael Dormer who was Lord Mayor of London

Lord Mayor of London

The Right Honourable Lord Mayor of London is the legal title for the Mayor of the City of London Corporation. The Lord Mayor of London is to be distinguished from the Mayor of London; the former is an officer only of the City of London, while the Mayor of London is the Mayor of Greater London and...

 in 1541. Dormer of built a mansion at Dorton Buckinghamshire and was High Sheriff of Buckinghamshire

High Sheriff of Buckinghamshire

The High Sheriff of Buckinghamshire, in common with other counties, was originally the King's representative on taxation upholding the law in Saxon times...

 in 1596. He was knighted at Charterhouse on 11 May 1603. In 1604, he was elected Member of Parliament

Member of Parliament

A Member of Parliament is a representative of the voters to a :parliament. In many countries with bicameral parliaments, the term applies specifically to members of the lower house, as upper houses often have a different title, such as senate, and thus also have different titles for its members,...

 for Clitheroe

Clitheroe (UK Parliament constituency)

Clitheroe was a parliamentary constituency in Lancashire.The town of Clitheroe was first enfranchised as a parliamentary borough in 1559, returning two Members of Parliament to the House of Commons of England until 1707, then to the House of Commons of Great Britain until 1800, and finally to the...

. He was elected MP for Aylesbury

Aylesbury (UK Parliament constituency)

Aylesbury is a parliamentary constituency represented in the House of Commons of the United Kingdom. The Conservative Party has held the seat since 1924, and held it at the 2010 general election with a 52.2% share of the vote.-Boundaries:...

1614 and again in 1621.

Dormer died in 1626 and was buried at Long Crendon north of Thame where there is an effigy.

Dormer married Jane Giffard and had a son Robert, who was High Sheriff of Oxfordshire.