Hugh Fortescue, 3rd Earl Fortescue (4 April 1818 – 10 October 1905), known as Viscount Ebrington from 1841 to 1861, was a British peer and occasional politician.

He entered the House of Commons in 1841 as a member for Plymouth. He lost this seat in 1852, but returned in 1854 for Marylebone, which seat he held until 1859, when he was called up to the House of Lords by a writ of acceleration. He succeeded to his father's earldom two years later.

He married Georgiana Dawson-Damer, granddaughter of John Dawson, 1st Earl of Portarlington, on 1 March 1847. They had ten children:

Lady Mary Eleanor Fortescue (1849–1938), married George Bridgeman.
Lady Lucy Catherine Fortescue (1851–1940), married Michael Hicks-Beach, 1st Earl St Aldwyn and had issue.
Lady Georgiana Seymour Fortescue (1852–1915), married her cousin, Lord Ernest Seymour, son of Francis Seymour, 5th Marquess of Hertford and had issue.
Hugh Fortescue, 4th Earl Fortescue (1854–1932)
Captain Hon. Sir Seymour John Fortescue (1856–1942), died unmarried.
Major Hon. Lionel Henry Dudley Fortescue (1857–1900), married Emily Adam
Captain Hon. Arthur Grenville Fortescue (1858–1895), married Lilla Fane
Major Hon. Sir John William Fortescue (1859–1933), married Winifred Beech
Hon. Charles Granville Fortescue (1861–1951), married Ethel Clarke, daughter of Sir Charles Clarke, 3rd Baronet and had issue.
Lady Frances Blanche Fortescue (1865–1950), married Archibald Hay Gordon-Duff.