There have been two Baronetcies created for persons with the surname Arthur, both in the Baronetage of the United Kingdom. Both creations are extant as of 2010.

The Arthur Baronetcy, of Upper Canada, was created in the Baronetage of the United Kingdom on 5 June 1841 for the soldier and colonial administrator Sir George Arthur. The fifth Baronet was Speaker of the New Zealand House of Representatives

Speaker of the New Zealand House of Representatives

In New Zealand the Speaker of the House of Representatives is the individual who chairs the country's legislative body, the New Zealand House of Representatives...

 between 1984 and 1985.

The Arthur Baronetcy, of Carlung in the County of Ayr, was created in the Baronetage of the United Kingdom on 10 January 1903. For more information on this creation, see Baron Glenarthur

Baron Glenarthur

Baron Glenarthur, of Carlung in the County of Ayr, is a title in the Peerage of the United Kingdom. It was created in 1918 for the Scottish businessman Sir Matthew Arthur, 1st Baronet. He had already been created a Baronet, of Carlung in the County of Ayr, on 10 January 1903...

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Arthur Baronets, of Upper Canada (1841)

• Sir George Arthur, 1st Baronet (1784–1854)

• Sir Frederick Leopold Arthur, 2nd Baronet (20 December 1816 – 1 June 1878). Arthur was a soldier. He was born at Plymouth
  Plymouth
  Plymouth is a city and unitary authority area on the coast of Devon, England, about south-west of London. It is built between the mouths of the rivers Plym to the east and Tamar to the west, where they join Plymouth Sound...
  
  , the son of Sir George Arthur, 1st Baronet, and Eliza Smith. He became a colonel
  Colonel
  Colonel , abbreviated Col or COL, is a military rank of a senior commissioned officer. It or a corresponding rank exists in most armies and in many air forces; the naval equivalent rank is generally "Captain". It is also used in some police forces and other paramilitary rank structures...
  
  , and succeeded to the baronetcy in 1854. He married Lady Elizabeth Hay-Drummond, daughter of the Earl of Kinnoull
  Thomas Hay-Drummond, 11th Earl of Kinnoull
  Thomas Robert Hay-Drummond, 11th Earl of Kinnoull was the son of Robert Hay-Drummond, 10th Earl of Kinnoull. He served as Lord Lyon King of Arms from 1804 until 1866, succeeding his father in that office...
  
  , on April 24, 1856. They had three children: Frederica Louisa Juliana Arthur (d. 23 March 1946), married Alfred Darby; Sir George Compton Archibald Arthur, 3rd Baronet; Captain Leonard Robert Sunkersett Arthur, CMG (23 December 1864 – 13 December 1903), died unmarried.

• Sir George Compton Archibald Arthur, 3rd Baronet (1860–1946)
• Sir George Malcolm Arthur, 4th Baronet (1908–1949)
• Sir Basil Malcolm Arthur, 5th Baronet
  Basil Arthur
  Sir Basil Malcolm Arthur, 5th Baronet served as Speaker of the New Zealand House of Representatives from 1984 to 1985. He was a member of the Labour Party.-Early life:...
  
   (1928–1985)
• Sir Stephen John Arthur, 6th Baronet (1953–2010)
• Sir Benjamin Nathan Arthur, 7th Baronet (b. 1979)

Heir presumptive: Sir Gavyn Arthur, circuit judge and 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...

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