Granville Harcourt-Vernon (26 July 1792 – 8 December 1879), was a British politician.
Harcourt-Vernon was the sixth son of the Most Reverend Edward Venables-Vernon-Harcourt, Archbishop of York, third son of George Venables-Vernon, 1st Baron Vernon. His mother was Lady Anne, daughter of Granville Leveson-Gower, 1st Marquess of Stafford. William Vernon Harcourt, Francis Venables-Vernon-Harcourt and Octavius Vernon Harcourt were his brothers.
Harcourt-Vernon was twice married. He married firstly Frances Julia, daughter of Anthony Hardolph Eyre, in 1814. They had several children, including Granville Harcourt-Vernon. After her death in February 1844 he married secondly the Hon. Pyne Jesse, daughter of Henry Trevor, 21st Baron Dacre and widow of John Henry Cotterell, in 1845. There were no children from this marriage. She died in March 1872. Harcourt-Vernon survived her by seven years and died in December 1879, aged 87.