Personal Union
- Austrian-Hungarian Empire [view nutshell]
- Kalmar Union [view nutshell]
- Kingdom of Denmark and Norway [view nutshell]
- Union of Krewo [view nutshell]
- Union of Hungary and Croatia [view nutshell]
- Union between Sweden and Norway [view nutshell]
- Austria and Spain under the Habsburgs [view nutshell]
- England and Scotland under the Stuarts [view nutshell]
- Kingdom of the Two Sicilies [view nutshell]
- Union of the Crowns in the British Isles [view nutshell]
- Spanish-Portuguese Union [view nutshell]
- Union of Brandenburg and Prussia [view nutshell]