Lady Georgiana Fullerton (23.09.1812–19.01.1885) was an English novelist.
Georgiana Charlotte Leveson-Gower was the daughter of Granville Leveson-Gower, 1st Earl Granville and his wife Lady Harriet Cavendish, and a sister of Granville George Leveson-Gower, 2nd Earl Granville, a prominent statesman. In 1833 she married in Paris an attaché of the embassy, Alexander George Fullerton, who came from Ireland.
She converted to Roman Catholicism in 1846 and wrote The Life of St. Frances of Rome, and Others. She wrote several novels, some of which were very successful. They include Ellen Middleton (1844), Grantley Manor (1847), Lady Bird (1852), Life of St.Francis of Rome (1855), The Countess of Bonneval (1858), Rose Leblanc (1861), Laurentia, a Tale of Japan (1861), Too Strange Not to Be True (1864), Constance Sherwood (1865), A Stormy Life (1867), Helpers of the Holy Soul (1868), Mrs. Gerald's Niece (1869), Life of Louisa de Carvajal (1873), A Will and a Way (1881), and Life of Elizabeth Lady Falkland (1883). She also published two volumes of verse.