Cháo Gōngwǔ 晁公武 (ca. 1105–1180), zì Zǐzhǐ 子止, hào Zhāodé xiānshēng 昭德先生, was a Southern Sòng bibliographer of the famous Cháo lineage of Jùyě 鉅野 (Shāndōng). The seventh-generation descendant of Cháo Jiǒng 晁迥 (951–1034), nephew of Cháo Yuèzhī 晁說之, and son of Cháo Chōngzhī 晁沖之, he held a series of Sìchuān posts in the early Shàoxīng era (after the family’s Jiànyán-era flight south), most notably Sìchuān zhuǎnyùn shǐpàn 四川轉運使判 and prefect of Róngzhōu 榮州 — whence his catalogue’s title Jùnzhāi dúshū zhì 郡齋讀書志 (Reading Notes from the Commandery Studio). Around 1147 he received the personal library of Jǐng Xiànmèng 井憲孟 (Nányáng), Sìchuān fiscal commissioner, who entrusted his books to Cháo as he prepared for retirement; Cháo collated the holdings against his own and from this base produced the catalogue (preface dated 1151) that became, alongside Chén Zhènsūn’s Zhízhāi shūlù jiětí 直齋書錄解題, the principal surviving Sòng private bibliography. Later he rose to fùwéngé zhíxuéshì 敷文閣直學士 and Línān shàoyǐn 臨安少尹, attacking Hóng Kuò 洪适 and Tāng Sītuì 湯思退 as a censor (1164). The dating in the Kanripo catalog meta (“fl. 1140–1171”) is narrower than the externally attested lifespan; CBDB 11 and Wilkinson, Chinese History: A New Manual, both give 1105–1180, followed here.