Franconia (German: Franken [ˈfʁaŋkn̩] ^ⓘ; East Franconian: Franggn [ˈfrɑŋɡŋ̍]; Bavarian: Frankn) is a geographical region of Germany, characterised by its culture and East Franconian dialect (Ostfränkisch). Franconia is made up of the three Regierungsbezirke (governmental districts) of Lower, Middle and Upper Franconia in Bavaria, the adjacent, Franconian-speaking South Thuringia, south of the Thuringian Forest—which constitutes the language boundary between Franconian and Thuringian—and the eastern parts of Heilbronn-Franconia in Baden-Württemberg.

Those parts of the Vogtland lying in Saxony (largest city: Plauen) are sometimes regarded as Franconian as well, because the Vogtlandian dialects are mostly East Franconian. The inhabitants of Saxon Vogtland, however, mostly do not consider themselves Franconian. On the other hand, the inhabitants of the Hessian-speaking parts of Lower Franconia west of the Spessart (largest city: Aschaffenburg) do consider themselves Franconian, although not speaking the dialect. Heilbronn-Franconia's largest city of Heilbronn and its surrounding areas are South Franconian-speaking, and therefore only sometimes regarded as Franconian. In Hesse, the east of the Fulda District is Franconian-speaking, and parts of the Oden Forest District are sometimes regarded as Franconian for historical reasons, but a Franconian identity did not develop there.

Franconia's largest city is Nuremberg, which is contiguous with Erlangen and Fürth, with which it forms the Franconian conurbation with around 1.3 million inhabitants. Other important Franconian cities are Würzburg, Bamberg, Bayreuth, Ansbach and Coburg in Bavaria, Suhl and Meiningen in Thuringia, and Schwäbisch Hall in Baden-Württemberg.

The German word Franken—Franconians—also refers to the ethnic group, which is mainly to be found in this region. They are to be distinguished from the Germanic people of the Franks, and historically formed their easternmost settlement area. The origins of Franconia lie in the settlement of the Franks from the 6th century in the area probably populated until then mainly by the Elbe Germanic people in the Main River area, known from the 9th century as East Francia (Francia Orientalis). In the Middle Ages the region formed much of the eastern part of the Duchy of Franconia and, from 1500, the Franconian Circle. The restructuring of the south German states by Napoleon, after the demise of the Holy Roman Empire, saw most of Franconia awarded to Bavaria.

The German name for Franconia, Franken, comes from the dative plural form of Franke, a member of the Germanic people known as the Franks. The name of the Franks in turn derives from a word meaning "daring, bold", cognate with old Norwegian frakkr, "quick, bold". Franks from the Middle and Lower Rhine gradually gained control of (and so gave their name to) what is now Franconia during the 6th to 8th centuries. English distinguishes between Franks (the early medieval Germanic people) and Franconians in reference to the high medieval stem duchy, following Middle Latin use of Francia for France vs. Franconia for the German duchy. In German the name Franken is equally used for both, while the French are called Franzosen, after Old French françois, from Latin franciscus, from Late Latin Francus, from Frank, the Germanic people.

The Franconian lands lie principally in Bavaria, north and south of the sinuous River Main which, together with the left (southern) Regnitz tributary, including its Rednitz and Pegnitz headstreams, drains most of Franconia. Other large rivers include the upper Werra in Thuringia and the Tauber, as well as the upper Jagst and Kocher streams in the west, both right tributaries of the Neckar. In southern Middle Franconia, the Altmühl flows towards the Danube; the Rhine–Main–Danube Canal crosses the European Watershed. The man-made Franconian Lake District has become a popular destination for day-trippers and tourists.

The landscape is characterized by numerous Mittelgebirge ranges of the German Central Uplands. The Western natural border of Franconia is formed by the Spessart and Rhön Mountains, separating it from the former Rhenish Franconian lands around Aschaffenburg (officially part of Lower Franconia), whose inhabitants speak Hessian dialects. To the north rise the Rennsteig ridge of the Thuringian Forest, the Thuringian Highland and the Franconian Forest, the border with the Upper Saxon lands of Thuringia. The Franconian lands include the present-day South Thuringian districts of Schmalkalden-Meiningen, Hildburghausen and Sonneberg, the historical Gau of Grabfeld, held by the House of Henneberg from the 11th century and later part of the Wettin duchy of Saxe-Meiningen.

In the east, the Fichtel Mountains lead to Vogtland, Bohemian Egerland (Chebsko) in the Czech Republic, and the Bavarian Upper Palatinate. The hills of the Franconian Jura in the south mark the border with the Upper Bavarian region (Altbayern), historical Swabia, and the Danube basin. The northern parts of the Upper Bavarian Eichstätt District, territory of the historical Bishopric of Eichstätt, are also counted as part of Franconia.