Hanover or Hannover (German:  Hannover (help·info), [haˈnoːfɐ]), on the river Leine, is the capital of the federal state of Lower Saxony (Niedersachsen), Germany and was once by personal union the family seat of the Hanoverian Kings of Great Britain, under their title as the dukes of Brunswick-Lüneburg (later described as the Elector of Hanover). At the end of the Napoleonic Wars, the Electorate was enlarged to become the capital of the Kingdom of Hanover.

In addition to being the capital of Lower Saxony, Hanover was the capital of the administrative area Regierungsbezirk Hannover (Hanover region) until Lower Saxony's administrative regions were disbanded at the beginning of 2005. Since 2001 it is part of the Hanover district (Region Hannover), which is a municipal body made up from the former district (Landkreis Hannover) and city of Hanover (note: although both Region and Landkreis are translated as district they are not the same).