The Yuanfeng Jiuyu Zhi (元豐九域志; "The Yuanfeng Treatise of the Nine Regions") is a 1085 Chinese geographical treatise written by Song dynasty scholars Wang Cun (王存), Zeng Zhao (曾肇) and Li Dechu (李德芻). "Yuanfeng" is an era name corresponding to the years 1078-1085 during Emperor Shenzong of Song's reign. Containing 10 chapters, it is the most detailed geographic description of every region of the Song empire. Included are descriptions of the four capitals, the 23 administrative circuits, and administration units beyond imperial territory (such as Jimi prefectures). Below the circuit level each prefecture (such as zhou and fu) is described, as well as the geographical circumstances, household numbers, the main local products, the historical development of the ___location, and garrisons.

《元豐九域志》，共十卷，北宋王存、曾肇、李德芻同撰，專記宋神宗元豐年間疆域地理總志。

元豐三年（1080年）《元豐九域志》成書，全書言簡意賅，內容僅《太平寰宇記》二十分之一，始於四京，次列二十三路，終於省廢州軍、化外州、羈縻州，記載各地道里、山川、鎮戊、戶口等。《四庫全書總目》評曰：「敘次亦簡潔有法……自序所抵文直事核，淘無愧其言矣。其書最為當世所重。」

近代有王文楚、魏嵩山的點校本，收錄於中華書局《中國古代地理總志叢刊》。