There have been five Baronetcies created for persons with the surname Newton, two in the Baronetage of England, one in the Baronetage of Nova Scotia and two in the Baronetage of Great Britain.

The Newton Baronetcy, of Barrs Court in the County of Gloucester, was created in the Baronetage of England on 16 August 1660 for John Newton. The second Baronet represented Grantham

Grantham (UK Parliament constituency)

Grantham was a Parliamentary constituency in Lincolnshire, England.The constituency was created in 1468 as a parliamentary borough which elected two Members of Parliament to the House of Commons of the Parliament of England until the union with Scotland, and then to the Parliament of Great Britain...

 in the House of Commons

British House of Commons

The House of Commons is the lower house of the Parliament of the United Kingdom, which also comprises the Sovereign and the House of Lords . Both Commons and Lords meet in the Palace of Westminster. The Commons is a democratically elected body, consisting of 650 members , who are known as Members...

. The fourth Baronet sat as 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 Beverley

Beverley (UK Parliament constituency)

Beverley has been the name of a parliamentary constituency in the East Riding of Yorkshire for three separate periods. From medieval times until 1869, it was a parliamentary borough, consisting solely of the market town of Beverley, which returned two Members of Parliament to the House of Commons...

 and Grantham. He married Margaret Coningsby, 2nd Countess Coningsby (see Earl Coningsby

Earl Coningsby

Earl Coningsby was a title in the Peerage of Great Britain. It was created in 1719 for Thomas Coningsby, 1st Baron Coningsby, with remainder to his eldest daughter , Margaret Newton, 1st Viscountess Coningsby, and the heirs male of her body. He was the great-grandson of the soldier and politician...

). Newton had no surviving male issue and the title became extinct on his death in 1743.

The Newton Baronetcy, of London, was created in the Baronetage of England on 25 January 1661 for Robert Newton. The title became extinct on his death in 1670.

The Newton Baronetcy, of Newton in the County of Haddington, was created in the Baronetage of Nova Scotia on 23 April 1697 for Richard Newton. The title became extinct on his death in circa 1727.

The Newton Baronetcy, of The Wood, Sydenham Hill, Lewisham, in the County of Kent, and Kottingham House, Burton-on-Trent, in the County of Stafford, was created in the Baronetage of the United Kingdom on 18 May 1900 for Alfred Newton, 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...

 from 1899 to 1900. The second Baronet represented Harwich

Harwich (UK Parliament constituency)

Harwich was a parliamentary constituency represented in the House of Commons of the Parliament of the United Kingdom. Until its abolition for the 2010 general election it elected one Member of Parliament by the first past the post system of election....

 in the House of Commons as a Unionist between 1910 and 1922.

The Newton Baronetcy, of Beckenham in the County of Kent, was created in the Baronetage of the United Kingdom on 27 October 1924 for Louis Newton, 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...

 from 1923 to 1924 and a member of the London County Council

London County Council

London County Council was the principal local government body for the County of London, throughout its 1889–1965 existence, and the first London-wide general municipal authority to be directly elected. It covered the area today known as Inner London and was replaced by the Greater London Council...

 from 1931 to 1934.

Newton Baronets, of Barrs Court (1660)

• Sir John Newton, 1st Baronet (c. 1611-1661)
• Sir John Newton, 2nd Baronet
  Sir John Newton, 2nd Baronet
  Sir John Newton, 2nd Baronet was an English politician who sat in the House of Commons from 1660 to 1685.Newton was the son of Thomas Newton of Gunwarley, Lincolnshire....
  
   (1626-1699)
• Sir John Newton, 3rd Baronet (c. 1651-1734)
• Sir Michael Newton, 4th Baronet (c. 1691/2-1743)

Newton Baronets, of The Wood and Kottingham House (1900)

• Sir Alfred James Newton, 1st Baronet (1849-1921)
• Sir Harry Kottingham Newton, 2nd Baronet
  Sir Harry Newton, 2nd Baronet
  Sir Harry Kottingham Newton, 2nd Baronet , was a British Conservative politician. He was elected Member of Parliament for Harwich in 1910, a seat he held until 1922. He died in June 1951, aged 76.-References:...
  
  (1875-1951)
• Sir Harry Michael Rex Newton, 3rd Baronet (1923-2008)
• The Rev. Sir George Peter Howgill Newton, 4th Baronet (born 1962)

Newton Baronets, of Beckenham (1924)

• Sir Louis Arthur Newton, 1st Baronet (1867-1945)
• Sir Edgar Henry Newton, 2nd Baronet (1893-1971)
• Sir Kenneth Garnar Newton, 3rd Baronet (1918–2008)
• Sir John Garnar Newton, 4th Baronet (born 1945)