There have been four Baronetcies created for members of the Harmsworth family, all in the Baronetage of the United Kingdom. All four recipients were brothers of each other.

The Harmsworth Baronetcy, of Elmwood, in the parish of St Peter's, Thanet, in the County of Kent, was created in the Baronetage of the United Kingdom on 23 August 1904 for the press lord Alfred Harmsworth

Alfred Harmsworth, 1st Viscount Northcliffe

Alfred Charles William Harmsworth, 1st Viscount Northcliffe rose from childhood poverty to become a powerful British newspaper and publishing magnate, famed for buying stolid, unprofitable newspapers and transforming them to make them lively and entertaining for the mass market.His company...

. He was later created Viscount Northcliffe

Viscount Northcliffe

Viscount Northcliffe, of St Peter in the County of Kent, was a title in the Peerage of the United Kingdom, It was created in 1918 for the press baron Alfred Harmsworth, 1st Baron Northcliffe. He had already been created a Baronet in 1904 and Baron Northcliffe, of the Isle of Thanet in the County of...

, with which title the baronetcy merged and became extinct on his death in 1922.

The Harmsworth Baronetcy, of Horsey in the County of Norfolk, was created in the Baronetage of the United Kingdom on 14 July 1910 for the press lord Harold Harmsworth. He was later created Viscount Rothermere

Viscount Rothermere

Viscount Rothermere, of Hemsted in the County of Kent, is a title in the Peerage of the United Kingdom. It was created in 1919 for the press lord Harold Harmsworth, 1st Baron Harmsworth. He had already been created a Baronet, of Horsey in the County of Norfolk, on 14 July 1910, and Baron...

, with which title the baronetcy remains merged.

The Harmsworth Baronetcy, of Moray Lodge in the Royal Borough of Kensington, was created in the Baronetage of the United Kingdom on 1 July 1918 for Leicester Harmsworth

Sir Leicester Harmsworth, 1st Baronet

Sir Robert Leicester Harmsworth, 1st Baronet , was a British businessman and Liberal politician.-Background:...

. He represented Caithness and Caithness and Sutherland

Caithness and Sutherland (UK Parliament constituency)

Caithness and Sutherland was a county constituency of the House of Commons of the Parliament of the United Kingdom from 1918 to 1997. It elected one Member of Parliament by the first past the post system of election....

 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...

 as a Liberal

Liberal Party (UK)

The Liberal Party was one of the two major political parties of the United Kingdom during the 19th and early 20th centuries. It was a third party of negligible importance throughout the latter half of the 20th Century, before merging with the Social Democratic Party in 1988 to form the present day...

. The title became extinct in 1980 on the death of his younger son, the third Baronet.

The Harmsworth Baronetcy, of Freshwater Grove in the parish of Shipley in the County of Sussex, was created in the Baronetage of the United Kingdom on 21 June 1922 for the newspaper owner Hildebrand Harmsworth. He was the proprietor of The Globe. As of 28 September 2008 the presumed third holder (the grandson of the first Baronet) has not proven his claim to the title, with the baronetcy is considered dormant.

Another brother, Cecil Harmsworth, was created Baron Harmsworth

Baron Harmsworth

Baron Harmsworth, of Egham in the County of Surrey, is a title in the Peerage of the United Kingdom. It was created in 1939 for the Liberal politician Cecil Harmsworth, Under-Secretary of State for Foreign Affairs between 1919 and 1922...

 in 1939.

Harmsworth Baronets, of Moray Lodge (1918)

• Sir (Robert) Leicester Harmsworth, 1st Baronet
  Sir Leicester Harmsworth, 1st Baronet
  Sir Robert Leicester Harmsworth, 1st Baronet , was a British businessman and Liberal politician.-Background:...
  
   (1870–1937)
• Sir Alfred Leicester St Barbe Harmsworth, 2nd Baronet (1892–1962)
• Sir Arthur Geoffrey Annesley Harmsworth, 3rd Baronet (1904–1980)

Harmsworth Baronets, of Freshwater Grove (1922)

• Sir Hildebrand Aubrey Harmsworth, 1st Baronet (1872–1929)
• Sir Hildebrand Alfred Beresford Harmsworth, 2nd Baronet (1901–1977) (dormant)
• Sir Hildebrand Harold Harmsworth, 3rd Baronet (b. 1930)