The Citadel of the Autarch

The Citadel of the Autarch
First edition
AuthorGene Wolfe
Cover artistDon Maitz
LanguageEnglish
SeriesThe Book of the New Sun
GenreScience fantasy
Publication date
1983
Publication placeUnited States
Media typePrint (Hardcover & Paperback)
Pages317
ISBN0-671-45251-7
Preceded byThe Sword of the Lictor 
Followed byThe Urth of the New Sun 

The Citadel of the Autarch is a science fantasy novel by American writer Gene Wolfe, first released in 1983. It is the fourth and final volume in the four-volume series The Book of the New Sun.

In 1987 Wolf followed this fourth volume with a coda novel entitled The Urth of the New Sun, after complaints from readers that it ended abruptly and without an adequate sense of conclusion. Many consider The Urth of the New Sun to be the fifth and final part of the series.