There have been two Baronetcies created for persons with the surname Mann, one in the Baronetage of Great Britain and one in the Baronetage of the United Kingdom

The Mann Baronetcy, of Linton Hall in the County of Kent, was created in the Baronetage of Great Britain on 3 March 1755 for Horace Mann. The second Baronet represented Maidstone

Maidstone (UK Parliament constituency)

Maidstone was a parliamentary constituency represented in the House of Commons of the Parliament of the United Kingdom.The parliamentary borough of Maidstone returned two Members of Parliament from 1552 until 1885, when its representation was reduced to one member...

 and Sandwich

Sandwich (UK Parliament constituency)

Sandwich was a parliamentary constituency in Kent, which elected two Members of Parliament to the House of Commons from 1366 until 1885, when it was disfranchised for corruption.-History:...

 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 title became extinct on his death in 1814. The second Baronet's sister, Catherine Mann, married the Right Reverend James Cornwallis, 4th Earl Cornwallis

James Cornwallis, 4th Earl Cornwallis

James Cornwallis, 4th Earl Cornwallis was a British clergyman and peer.Cornwallis was the third son of Charles Cornwallis, 1st Earl Cornwallis and his wife, Elizabeth...

. Their son James Cornwallis

James Mann

James Mann is an American journalist, and senior writer-in-residence at the Paul H. Nitze School of Advanced International Studies.-Life:He graduated from Harvard University with a B.A...

 assumed by Royal license the surname of Mann in lieu of Cornwallis in 1814. In 1824 he succeeded in the earldom of Cornwallis (see Earl Cornwallis

Earl Cornwallis

Earl Cornwallis was a title in the Peerage of Great Britain. It was created in 1753 for Charles Cornwallis, 5th Baron Cornwallis. The second Earl was created Marquess Cornwallis but this title became extinct in 1823, while the earldom and its subsidiary titles became extinct in 1852...

).

The Mann Baronetcy, of Thelveton Hall in Thelveton in the County of Norfolk, was created in the Baronetage of the United Kingdom on 29 December 1905 for Edward Mann. He was Chairman of Mann, Crossmann & Paulin, Ltd, brewers, and of Brandon's Putney Brewery Ltd.

Mann Baronets, of Linton Hall (1755)

• Sir Horace Mann, 1st Baronet
  Sir Horace Mann, 1st Baronet
  Sir Horace Mann, 1st Baronet KB , diplomat, was a long standing British resident in Florence.-Biography:...
  
   (c. 1701-1786)
• Sir Horace Mann, 2nd Baronet (1744-1814)

Mann Baronets, of Thelveton Hall (1905)

• Sir Edward Mann, 1st Baronet (1854-1943)
• Sir (Edward) John Mann, 2nd Baronet (1883-1971)
• Sir Rupert Edward Mann, 3rd Baronet (b. 1946)