Tartary (Latin: Tartaria) or Great Tartary (Latin: Tartaria Magna) was a historical region in Asia located between the Caspian Sea-Ural Mountains and the Pacific Ocean. Tartary was a blanket term used by Europeans for the areas of Central Asia, North Asia, and East Asia unknown to European geography spanning the vast region of the Pontic-Caspian steppe, the Volga-Urals, the Caucasus, Siberia, Inner Asia, Mongolia and Manchuria.
Knowledge of Manchuria, Siberia and Central Asia in Europe prior to the 18th century was limited. The entire area was known simply as "Tartary" and its inhabitants "Tartars". In the Early modern period, as understanding of the geography increased, Europeans began to subdivide Tartary into sections with prefixes denoting the name of the ruling power or the geographical location. Thus, Siberia was Great Tartary or Russian Tartary, the Crimean Khanate was Little Tartary, Manchuria was Chinese Tartary, and western Central Asia (prior to becoming Russian Central Asia) was known as Independent Tartary.
European opinions of the area were often negative, and reflected the legacy of the Mongol invasions that originated from this region. The term originated in the wake of the widespread devastation spread by the Mongol Empire. The adding of an extra "r" to "Tatar" was suggestive of Tartarus, a Hell-like realm in Greek mythology. In the 18th century, conceptions of Siberia or Tartary and its inhabitants as "barbarous" by Enlightenment-era writers tied into contemporary ideas of civilization, savagery and racism.
The usage of "Tartary" declined as the region became more known to European geographers; however, the term was still used long into the 19th century. Ethnographical data collected by Jesuit missionaries in China contributed to the replacement of "Chinese Tartary" with Manchuria in European geography by the early 18th century. The voyages of Egor Meyendorff and Alexander von Humboldt into this region gave rise to the term Central Asia in the early 19th century as well as supplementary terms such as Inner Asia, and Russian expansionism led to the term "Siberia" being coined for the Asian half of the Russian Empire.
In the novel Ada by Vladimir Nabokov, Tartary is the name of a large country on the fictional planet of Antiterra. Russia is Tartary's approximate geographic counterpart on Terra, Antiterra's twin world apparently identical to "our" Earth, but doubly fictional in the context of the novel.
In Jonathan Swift's Gulliver's Travels, the eponymous hero refers to his travels in Tartary on two occasions, and suggests that the then modern geographers of Europe were "in a great error, by supposing nothing but sea between Japan and California; for it was ever my opinion, that there must be a balance of earth to counterpoise the great continent of Tartary".
L. Frank Baum's origin story of Santa Claus, The Life and Adventures of Santa Claus, features mythical antagonists from Tartary who oppose Santa's compassionate gift giving practices. They are described as the Three-Eyed Giants of Tartary.
In Walter de la Mare's poem "If I were lord of Tartary", Tartary is an imaginary land full of happiness.