1803 disestablishments in the Holy Roman Empire

The Prince-Bishopric of Basel (German: Hochstift Basel, Fürstbistum Basel, Bistum Basel) was an ecclesiastical principality within the Holy Roman Empire, ruled from 1032 by prince-bishops with their seat at Basel, and from 1528 until 1792 at Porrentruy, and thereafter at Schliengen. As an imperial estate, the prince-bishop had a seat and voting rights at the Imperial Diet. The final dissolution of the state occurred in 1803 as part of the German Mediatisation.

The Prince-Bishopric of Trent (Latin: Episcopatus ac Principatus Tridentinus; German: Hochstift Trient, Fürstbistum Trient, Bistum Trient) was an ecclesiastical principality roughly corresponding to the present-day Northern Italian autonomous province of Trentino. It was created in 1027 and existed until 1803, when it was secularised and absorbed into the County of Tyrol held by the House of Habsburg. Trent was a Hochstift, an Imperial State under the authority of a prince-bishop at Trento.

Biberach an der Riß (Swabian: Bibra), often referred to as simply Biberach (), is a town in southern Germany. It is the capital of Biberach district, in the Upper Swabia region of the German state (Land) of Baden-Württemberg. It is called Biberach an der Riß after the small river Riß which flows through the city to distinguish it from the other towns of similar names.

The Landgraviate of Hesse-Kassel (German: Landgrafschaft Hessen-Kassel), spelled Hesse-Cassel during its entire existence, also known as the Hessian Palatinate (German: Hessische Pfalz), was a state of the Holy Roman Empire. The state was created in 1567 when the Landgraviate of Hesse was divided upon the death of Philip I, Landgrave of Hesse. His eldest son William IV inherited the northern half of the Landgraviate and the capital of Kassel. The other sons received the Landgraviates of Hesse-Marburg, Hesse-Rheinfels and Hesse-Darmstadt.

The Electoral Palatinate (German: Kurpfalz) or the Palatinate (Pfalz), officially the Electorate of the Palatinate (Kurfürstentum Pfalz), was a constituent state of the Holy Roman Empire. The electorate had its origins under the rulership of the Counts Palatine of Lotharingia in 915; it was then restructured under the Counts Palatine of the Rhine in 1085. From 1214 until the Electoral Palatinate was merged into the Kingdom of Bavaria in 1805, the House of Wittelsbach provided the Counts Palatine or Electors. These counts palatine of the Rhine would serve as prince-electors (Kurfürsten) from "time immemorial", and were noted as such in a papal letter of 1261; they were confirmed as electors by the Golden Bull of 1356.

Augsburg (OWGZ-burg, AWGZ-, ; Swabian German: Ougschburg) is a city in the Bavarian part of Swabia, Germany, around 50 kilometres (31 mi) west of the Bavarian capital Munich. It is a university town and the regional seat of the Regierungsbezirk Swabia with a well preserved Altstadt (historical city centre). Augsburg is an urban district and home to the institutions of the Landkreis Augsburg. It is the third-largest city in Bavaria (after Munich and Nuremberg), with a population of 304,000 and 885,000 in its metropolitan area.

The Prince-Bishopric of Speyer, formerly known as Spires in English, (German: Hochstift Speyer, Fürstbistum Speyer, Bistum Speyer) was an ecclesiastical principality in what are today the German states of Rhineland-Palatinate and Baden-Württemberg. It was secularized in 1803. The prince-bishop resided in Speyer, a Free Imperial City, until the 14th century, when he moved his residence to Uddenheim (Philippsburg), then in 1723 to Bruchsal. There was a tense relationship between successive prince-bishops, who were Roman Catholic, and the civic authorities of the Free City, officially Protestant since the Reformation. The prince-provostry of Wissemburg in Alsace was ruled by the prince-bishop of Speyer in a personal union.

Grünau Charterhouse (German: Kloster or Kartause Grünau) is a former Carthusian monastery, or charterhouse, in Schollbrunn in Bavaria, Germany. It was the first Carthusian monastery in Franconia and in today's Bavaria.

The Prince-Bishopric of Lübeck, (German: Hochstift Lübeck; Fürstbistum Lübeck; Bistum Lübeck) was an ecclesiastical principality of the Holy Roman Empire until 1803. Originally ruled by Roman-Catholic bishops, after 1586 it was ruled by lay administrators and bishops who were members of the Protestant Holstein-Gottorp line of the House of Oldenburg. The prince-bishops had seat and vote on the Ecclesiastical Bench of the College of Ruling Princes of the Imperial Diet.

The Prince-Bishopric of Augsburg (German: Fürstbistum Augsburg; Hochstift Augsburg) was one of the prince-bishoprics of the Holy Roman Empire, and belonged to the Swabian Circle. It should not be confused with the larger diocese of Augsburg, over which the prince-bishop exercised only spiritual authority.