Hanover is primarily used for the German city of Hanover and to a lesser extent the surrounding Hanover district and region.

Hanover was also used as a name for the Calenberg line of the Duchy of Brunswick-Lüneburg. It became the Kingdom of Hanover, and later a province of Prussia.

Hanover is also the name of a place in the Canadian province of Ontario; see Hanover, Ontario.

Hanover is also the name of a number of places in the United States of America:

See also House of Hanover.