Haute-Argovievignette|Carte La Haute-Argovie (en allemand Oberaargau, en italien Alta Argovia, en Oberaargou) est la partie nord-est du canton de Berne, en Suisse, limitrophe des cantons de Soleure, d'Argovie et de Lucerne. Au sud, la Haute-Argovie est bordée par l'Emmental, unique région bernoise limitrophe, et forme d'un point de vue administratif l'arrondissement de Haute-Argovie. Jusqu'en 2009, il comprenait deux districts du canton de Berne : le district de Wangen et celui d'Aarwangen, qui avec une partie du district de Trachselwald appartiennent désormais à l'arrondissement administratif de Haute-Argovie.
RütschelenRütschelen is a municipality in the Oberaargau administrative district in the canton of Bern in Switzerland. Rütschelen is first mentioned in 1273 as Ruschole. Rütschelen ruled by the Counts of Kyburg, though St. Urban's Abbey and the Thunstetten Commandery were also important landholders. In 1385, the low court was pledged to the Rohrmoos and Mattstetten families, former Kyburg Ministerialis (unfree knights in the service of a feudal overlord) families.
LangenthalLangenthal est une ville et une commune suisse du canton de Berne, située dans l'arrondissement administratif de Haute-Argovie, sur la rivière Langeten. Langenthal s'étend sur une superficie de ^CH-BE^CH-BE. Langenthal compte au . Sa densité de population atteint . vignette|Photo aérienne de Walter Mittelholzer (1919) Langenthal est mentionné dans un document de 561, en rapport avec l'abbaye de St-Urbain, située dans le canton voisin de Lucerne. Durant six siècles, ce couvent joua un rôle important pour Langenthal.
BleienbachBleienbach is a municipality in the Oberaargau administrative district in the canton of Bern in Switzerland. Bleienbach is first mentioned in 1194 as Blaichinbach. Evidence of prehistoric settlements near Bleienbach include a Hallstatt grave mound in Oberbützberg, a High Medieval earthen fortress in Eggwald, and an ancient road near the village church. The low court and right to appoint priests to the village church were originally part of the Herrschaft of Langenstein-Grünenberg.
Busswil bei MelchnauBusswil bei Melchnau is a municipality in the Oberaargau administrative district in the canton of Bern in Switzerland. Busswil bei Melchnau is first mentioned in 1194 as Bouswillare. During the Middle Ages parts of the village were owned by local nobles and the Abbey of St. Gallen. In 1480, the Herrschaft of Grünenberg, which included Busswil, was acquired by Bern. Under Bernese control it was part of the court of Melchnau in the bailiwick of Aarwangen until 1798.
MadiswilMadiswil is a municipality in the Oberaargau administrative district in the canton of Bern in Switzerland. Since January 1, 2007, Gutenburg is part of the municipality. On 1 January 2011 Kleindietwil and Leimiswil were merged with the municipality of Madiswil. Madiswil is first mentioned in 795 as Madalestwilare. The ruins of Early Medieval ring fort at Weiherköpfli, an undated ring fort at Fuchsmatt and an undated fort at Grauenstein are the earliest evidence of settlements in Madiswil.
ObersteckholzObersteckholz is a former municipality in the Oberaargau administrative district in the canton of Bern in Switzerland. On 1 January 2021 the former municipality of Obersteckholz merged into Langenthal. Obersteckholz is first mentioned in 1255 as Stechcholz. Obersteckholz was the property of the Baron of Langenstein. In 1194, he founded St. Urban's Abbey and granted the village to the Abbey as part of its endowment. It was part of the Abbey's court of Langenthal until 1406 when it became part of the Bernese bailiwick of Wangen.