There have been three Baronetcies created for persons with the surname Younger, all in the Baronetage of the United Kingdom.

The Younger Baronetcy, of Auchen Castle, was created in 1911 for William Younger, MP for Stamford

Stamford (UK Parliament constituency)

Stamford was a constituency in the county of Lincolnshire of the House of Commons for the Parliament of England to 1706 then of the Parliament of Great Britain from 1707 to 1800 and of the Parliament of the United Kingdom from 1801 to 1918...

 from 1895 to 1906 and briefly for Peebles and Selkirkshire

Peebles and Selkirk (UK Parliament constituency)

Peebles and Selkirk was a county constituency of the House of Commons of the Parliament of the United Kingdom from 1868 to 1918. It elected one Member of Parliament by the first past the post voting system.- Boundaries :...

.

The Younger Baronetcy, of Leckie, was created in 1911 for George Younger, MP and member of the brewing family, later to become Viscount Younger of Leckie

Viscount Younger of Leckie

Viscount Younger of Leckie, of Alloa in the County of Clackmannan, is a title in the Peerage of the United Kingdom. It was created in 1923 for the Unionist politician Sir George Younger, 1st Baronet. He had already been created a Baronet, of Leckie in the County of Clackmannan, in the Baronetage of...

The Younger Baronetcy, of Fountainbridge

Fountainbridge

Fountainbridge is an area of Edinburgh, Scotland, a short distance west of the city centre, adjoining Tollcross to the east, Bruntsfield to the south, Dalry to the west and Haymarket to the north....

, Edinburgh

Edinburgh

Edinburgh is the capital city of Scotland, the second largest city in Scotland, and the eighth most populous in the United Kingdom. The City of Edinburgh Council governs one of Scotland's 32 local government council areas. The council area includes urban Edinburgh and a rural area...

, was one of the last Baronet

Baronet

A baronet or the rare female equivalent, a baronetess , is the holder of a hereditary baronetcy awarded by the British Crown...

cies created in the Baronetage of the United Kingdom, established in 1964. It was created for William Younger, son of a brother of the 1st Viscount Younger of Leckie.

Younger Baronets, of Auchen Castle (1911)

• Sir William Younger, 1st Baronet (1862–1937)
• Sir William Robert Younger, 2nd Baronet (1888–1973)
• Sir John William Younger, 3rd Baronet (1920–2002)
• Sir Julian William Richard Younger, 4th Baronet (b. 1950)

Younger Baronets, of Fountainbridge (1964)

• Sir William McEwan Younger, 1st Baronet
  William McEwan Younger
  Sir William McEwan Younger, 1st Baronet was a Scottish brewer and political activist.His father William Younger was a brother George Younger, 1st Viscount Younger, and of Robert Younger, Baron Blanesburgh; his great uncle was William McEwan, a Liberal MP for Edinburgh and the founder of McEwan's...
  
  (1905–1992)