The title Viscount Harcourt has been created twice, once in the Peerage of Great Britain

Peerage of Great Britain

The Peerage of Great Britain comprises all extant peerages created in the Kingdom of Great Britain after the Act of Union 1707 but before the Act of Union 1800...

 and once in the Peerage of the United Kingdom

Peerage of the United Kingdom

The Peerage of the United Kingdom comprises most peerages created in the United Kingdom of Great Britain and Ireland after the Act of Union in 1801, when it replaced the Peerage of Great Britain...

. It was first created in Great Britain in 1711 for Simon Harcourt

Simon Harcourt, 1st Viscount Harcourt

Simon Harcourt, 1st Viscount Harcourt, of Stanton Harcourt, Oxfordshire, PC was Queen Anne's Lord Chancellor of Great Britain. He was her solicitor-general and her commissioner for arranging the union with Scotland...

, Lord Chancellor

Lord Chancellor

The Lord High Chancellor of Great Britain, or Lord Chancellor, is a senior and important functionary in the government of the United Kingdom. He is the second highest ranking of the Great Officers of State, ranking only after the Lord High Steward. The Lord Chancellor is appointed by the Sovereign...

. The third viscount was created Earl Harcourt in 1749.

The ancient family of Harcourt held Stanton Harcourt

Stanton Harcourt

Stanton Harcourt is a village and civil parish in Oxfordshire about southeast of Witney and west of Oxford.-Archaeology:Within the parish of Stanton Harcourt is a series of paleochannel deposits buried beneath the second gravel terrace of the river Thames...

. Oxfordshire from the 12th century and other later Oxfordshire seats included Cokethorpe House and Nuneham House

Nuneham House

Nuneham House is a Palladian villa, at Nuneham Courtenay in Oxfordshire England. It was built for Simon Harcourt, 1st Earl Harcourt in 1756. It is owned by Oxford University and is currently used as a retreat centre by the Brahma Kumaris World Spiritual University...

. In addition they held estates in Staffordshire

Staffordshire

Staffordshire is a landlocked county in the West Midlands region of England. For Eurostat purposes, the county is a NUTS 3 region and is one of four counties or unitary districts that comprise the "Shropshire and Staffordshire" NUTS 2 region. Part of the National Forest lies within its borders...

 at Ellenhall Hall

Ellenhall

Ellenhall is a small Staffordshire village roughly 2.5 miles south of Eccleshall originally comprising part of the extensive estates of the Earl of Lichfield. The village consists of a scattered community of cottages, a hall, and several farms...

 and Abbey House, Ranton Priory

Ranton, Staffordshire

Ranton is a small village in Staffordshire, situated west of Stafford, east of Woodseaves and northeast of Gnosall.-All Saints church, Ranton:All Saints church, Ranton, is a small ancient structure, dating from the 13th century....

.

All titles became extinct on the death of the third earl in 1830.

The title was created a second time in 1917 for Lewis Harcourt

Lewis Vernon Harcourt, 1st Viscount Harcourt

Lewis Vernon Harcourt, 1st Viscount Harcourt PC was a British Liberal Party politician who held the Cabinet office of Secretary of State for the Colonies from 1910 to 1915...

, son of Sir William Harcourt

William Vernon Harcourt (politician)

Sir William George Granville Venables Vernon Harcourt was a British lawyer, journalist and Liberal statesman. He served as Member of Parliament for various constituencies and held the offices of Home Secretary and Chancellor of the Exchequer under William Ewart Gladstone before becoming Leader of...

, both prominent British politicians. (The Harcourts were actually patrilineally Vernons, but had come into the Harcourt estates, and therefore taken that name, through a Harcourt ancestress). The title is now extinct because the first viscount had only one son, and he only daughters.

Viscounts Harcourt, First Creation (1711)

• Simon Harcourt, 1st Viscount Harcourt
  Simon Harcourt, 1st Viscount Harcourt
  Simon Harcourt, 1st Viscount Harcourt, of Stanton Harcourt, Oxfordshire, PC was Queen Anne's Lord Chancellor of Great Britain. He was her solicitor-general and her commissioner for arranging the union with Scotland...
  
   (1661–1727)
• Simon Harcourt, 2nd Viscount Harcourt
  Simon Harcourt, 1st Earl Harcourt
  Simon Harcourt, 1st Earl Harcourt, of Stanton Harcourt, Oxfordshire, PC, FRS, Viceroy of Ireland , known as 2nd Viscount Harcourt, of Stanton Harcourt, Oxfordshire, between 1727 and 1749, was a British diplomat and general....
  
   (1714–1777) (became Earl Harcourt in 1749)

Earls Harcourt (1749)

• Simon Harcourt, 1st Earl Harcourt
  Simon Harcourt, 1st Earl Harcourt
  Simon Harcourt, 1st Earl Harcourt, of Stanton Harcourt, Oxfordshire, PC, FRS, Viceroy of Ireland , known as 2nd Viscount Harcourt, of Stanton Harcourt, Oxfordshire, between 1727 and 1749, was a British diplomat and general....
  
   (1714–1777)
• George Simon Harcourt, 2nd Earl Harcourt (1736–1809)
• William Harcourt, 3rd Earl Harcourt
  William Harcourt, 3rd Earl Harcourt
  Field Marshal William Harcourt, 3rd Earl Harcourt, of Stanton Harcourt, Oxfordshire, GCB was a British nobleman and soldier. He was the younger son of Simon Harcourt, 1st Earl Harcourt.-Seven Years War:...
  
   (1743–1830)

Viscounts Harcourt, Second Creation (1917)

• Lewis Vernon Harcourt, 1st Viscount Harcourt (1863–1922)
• William Edward Harcourt, 2nd Viscount Harcourt (1908–1979)