There have been three Baronetcies created for people with the surname Mills, all in the Baronetage of the United Kingdom. Two of the titles are still extant.

The Mills Baronetcy, of Hillingdon in the County of Middlesex, was created in the Baronetage of the United Kingdom

United Kingdom

The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

 on 17 November 1868. For more information on this creation, see Baron Hillingdon

Baron Hillingdon

Baron Hillingdon, of Hillingdon in the County of Middlesex, was a title in the Peerage of the United Kingdom held by the Mills family. This family descended from Charles Mills, a Director of the Honourable East India Company and a member of the Council of India. On 17 November 1868 he was created a...

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The Mills Baronetcy, of Ebbw Vale in the County of Monmouth, was created in the Baronetage of the United Kingdom on 31 January 1921 for the industrialist and Conservative

Conservative Party (UK)

The Conservative Party, formally the Conservative and Unionist Party, is a centre-right political party in the United Kingdom that adheres to the philosophies of conservatism and British unionism. It is the largest political party in the UK, and is currently the largest single party in the House...

 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,...

 Frederick Mills

Sir Frederick Mills, 1st Baronet

Sir Frederick Mills, 1st Baronet was a British iron and steel manufacturer and Conservative Party politician. He was a Member of Parliament from 1931 to 1945....

. The second Baronet was Director of Public Works of Sierra Leone

Sierra Leone

Sierra Leone , officially the Republic of Sierra Leone, is a country in West Africa. It is bordered by Guinea to the north and east, Liberia to the southeast, and the Atlantic Ocean to the west and southwest. Sierra Leone covers a total area of and has an estimated population between 5.4 and 6.4...

 between 1939 and 1942 and of Uganda

Uganda

Uganda , officially the Republic of Uganda, is a landlocked country in East Africa. Uganda is also known as the "Pearl of Africa". It is bordered on the east by Kenya, on the north by South Sudan, on the west by the Democratic Republic of the Congo, on the southwest by Rwanda, and on the south by...

 between 1942 and 1947.

The Mills Baronetcy, of Alcester in the County of Warwick, was created in the Baronetage of the United Kingdom on 1 July 1953. For more information on this creation, see Viscount Mills

Viscount Mills

Viscount Mills, of Kensington in the County of London, is a title in the Peerage of the United Kingdom. It was created in 1962 for the Conservative politician Percy Mills, 1st Baron Mills...

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Mills Baronets, of Ebbw Vale (1921)

• Sir Frederick Mills, 1st Baronet
  Sir Frederick Mills, 1st Baronet
  Sir Frederick Mills, 1st Baronet was a British iron and steel manufacturer and Conservative Party politician. He was a Member of Parliament from 1931 to 1945....
  
  (1865-1953)
• Sir Frederick Leighton Victor Mills, 2nd Baronet (1893-1955)
• Sir Peter Frederick Leighton Mills, 3rd Baronet (b. 1924)