Editing Duchy (section)

===Fictional duchies===

* Underland, ruled by Underbeit, on ''[[The Venture Brothers]]''
* [[House Atreides|Duchy of Atreides]] from the [[Dune (franchise)|Dune series]] by [[Frank Herbert]]
*Soleanna from [[Sonic the Hedgehog]]
* Duchy of Dollet (from ''[[Final Fantasy VIII]]'')
* Grand Duchy of Jeuno (from ''[[Final Fantasy XI]]'')
* [[Duchy of Grand Fenwick]]
* [[Borogravia]], [[Quirm]] (from the [[Discworld]] series)
*Duchy of Sto Helit, in the kingdom of Sto Lat (from the Discworld series)
* [[The Six Duchies]] (from [[The Farseer Trilogy]] and [[Tawny Man Trilogy]] by [[Robin Hobb]])
* [[Zeon]] (from the [[Mobile Suit Gundam]] series, also sometimes translated as a [[Principality]], as the Japanese language does not distinguish between the two)
* Erat, [[Arendia#Countries and cities|Asturia]], [[Mimbre]], [[Wacune]] (from the [[Belgariad]] series)
* [[Crydee]], [[Yabon]], Krondor, [[Olasko]], [[Rillanon]], Ran, Rodez, Salador, [[The Sunset Isles]] (from the [[Riftwar]] saga)
* Kolvir, ruled by main character Prince Corwin in [[The Chronicles of Amber]]
* Freid (from [[The Vision of Escaflowne]] series)
* [[The Castle of Cagliostro|Cagliostro]] from ''[[Lupin III: The Castle of Cagliostro]]''
* [[Duchy of Nuts]] from ''[[Adventure Time with Finn & Jake]]''
* [[Duchy of Harrington]] from the [[Honorverse]]
*Duchy of Toussaint, from ''[[The Witcher]]'' series.
*Duchy of Serkonos, from ''[[Dishonored 2]]''
*[[Duchy of Urnst]], from the ''[[Dungeons & Dragons]]'' [[Greyhawk]] Campaign Setting.