The Eglinton Tournament of 1839 was a reenactment of a medieval joust and revel held in North Ayrshire, Scotland between 28 and 30 August. It was funded and organized by Archibald, Earl of Eglinton, and took place at Eglinton Castle in Ayrshire. The Queen of Beauty was Georgiana, Duchess of Somerset. Many distinguished visitors took part, including Prince Louis Napoleon, the future Emperor of the French.

The Tournament was a deliberate act of Romanticism, and drew 100,000 spectators. It is primarily known now for the ridicule poured on it by the Whigs. Problems were caused by rainstorms. At the time views were mixed:

Whatever opinion may be formed of the success of the Tournament, as an imitation of ancient manners and customs, we heard only one feeling of admiration expressed at the gorgeousness of the whole scene, considered only as a pageant. Even on Wednesday, when the procession was seen to the greatest possible disadvantage, the dullest eye glistened with delight as the lengthy and stately train swept into the marshalled lists.

Participants had undergone regular training.

The preparations, and the many works of art commissioned for or inspired by the Eglinton Tournament, had an effect on public feeling and the course of 19th-century Gothic revivalism. Its ambition carried over to events such as the lavish Tournament of Brussels in 1905, and presaged the historical reenactments of the present. Features of the tournament were actually inspired by Walter Scott's novel Ivanhoe: it was attempting "to be a living re-enactment of the literary romances". In Eglinton's own words "I am aware of the manifold deficiencies in its exhibition — more perhaps than those who were not so deeply interested in it; I am aware that it was a very humble imitation of the scenes which my imagination had portrayed, but I have, at least, done something towards the revival of chivalry".

While others made a profit, Lord Eglinton had to absorb losses. The Earl's granddaughter, Viva Montgomerie recalled in her memoirs that "he had spent most of the wealth of the estate".

The Gothic Revival and the rise of Romanticism of the late 18th and early 19th centuries were an international phenomenon. Medieval-style jousts, for example, were regularly held in Sweden between 1777 and 1800. Gothic novels, such as The Castle of Otranto, by Horace Walpole (1717–1797) and the many works of Sir Walter Scott popularised the idea of passionate romanticism and praise of chivalric ideals. Walpole himself was one of the first in England to renovate his mansion into a mock-Gothic castle, Strawberry Hill (1749–1777).

Medieval culture was widely admired as an antidote to the modern enlightenment and industrial age. Plays and theatrical works (such as Ivanhoe, which in 1820 was playing in six different productions in London alone) perpetuated the romanticism of knights, castles, feasts and tournaments. Caspar David Friedrich (1774–1840) of Germany painted magnificent Gothic ruins and spiritual allegories. Jane Austen (1775–1815) wrote her novel Northanger Abbey (written 1798, published 1817) as a satire on romantic affectation.