Viscount Harcourt, of Stanton Harcourt in the County of Oxford, is a title created twice, once in the Peerage of Great Britain and once in the Peerage of the United Kingdom. It was first created in the Peerage of Great Britain in 1711 for Lord Chancellor Simon Harcourt. For more information on this creation, which became extinct in 1830, see Earl Harcourt.
The viscountcy was created a second time in 1917 in favour of Lewis Vernon Harcourt, also created Baron Nuneham, of Nuneham Courtenay in the County of Oxford, in the Peerage of the United Kingdom. Harcourt was the son of Sir William Vernon Harcourt, son of William Vernon Harcourt, son of the Honourable and Right Reverend Edward Venables-Vernon-Harcourt, son of George Venables-Vernon, 1st Baron Vernon, by his third wife Martha Harcourt, daughter of Simon Harcourt, son of the 1st Viscount Harcourt. The title became extinct on the death of the first Viscount's son, the second Viscount, in 1979.