There have been two Baronetcies created for persons with the surname Warner, one in the Baronetage of England and one in the Baronetage of the United Kingdom. One creation is extant as of 2010.

The Warner Baronetcy, of Parham in the County of Suffolk, was created in the Baronetage of the United Kingdom on 16 July 1660 for John Warner. The title became extinct on his death in 1705.

The Warner Baronetcy, of Brettenham in the County of Suffolk, was created in the Baronetage of the United Kingdom on 9 July 1910 for Courtenay Warner

Sir Courtenay Warner, 1st Baronet

Sir Thomas Courtenay Theydon Warner, 1st Baronet CB was a politician in the United Kingdom, who served as Member of Parliament for North Somerset from 1892 to 1895, and for Lichfield from 1896 to 1923....

, 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 North Somerset

North Somerset (UK Parliament constituency)

North Somerset is a county constituency represented in the House of Commons of the Parliament of the United Kingdom. It elects one Member of Parliament by the first past the post system of election...

 and Lichfield

Lichfield (UK Parliament constituency)

Lichfield is a constituency represented in the House of Commons of the Parliament of the United Kingdom. It elects one Member of Parliament by the first past the post system of election.- Boundaries :...

. The second Baronet was High Sheriff of Suffolk

High Sheriff of Suffolk

This is a list of High Sheriffs of Suffolk. The High Sheriff is the oldest secular office under the Crown and is appointed annually by the Crown. He was originally the principal law enforcement officer in the county and presided at the Assizes and other important county meetings...

 between 1947 and 1948 and a Colonel in the British Army

British Army

The British Army is the land warfare branch of Her Majesty's Armed Forces in the United Kingdom. It came into being with the unification of the Kingdom of England and Scotland into the Kingdom of Great Britain in 1707. The new British Army incorporated Regiments that had already existed in England...

.

Warner Baronets, of Brettenham (1910)

• Sir (Thomas) Courtenay Theydon Warner, 1st Baronet
  Sir Courtenay Warner, 1st Baronet
  Sir Thomas Courtenay Theydon Warner, 1st Baronet CB was a politician in the United Kingdom, who served as Member of Parliament for North Somerset from 1892 to 1895, and for Lichfield from 1896 to 1923....
  
  (1857–1934)
• Sir Edward Courtenay Thomas Warner, 2nd Baronet (1886–1955)
• Sir (Edward Courtenay) Henry Warner, 3rd Baronet (1922–2011)
• Sir Philip Courtenay Thomas Warner, 4th Baronet (b. 1951)