吳廣成 (fl. early nineteenth century), courtesy name Xīzhāi 西齋, was a Qing-dynasty historian and bibliophile from Qīngpǔ 青浦, Jiangsu (present-day Shanghai municipality). Birth and death dates are unknown; CBDB (id 269594) carries his name but no dates. He spent approximately ten years compiling KR4k0249 Xīxià Shūshì 西夏書事 (42 juǎn), a pioneering annalistic chronicle of the Tangut Xi Xia dynasty (1038–1227) based on systematic collection of materials from the dynastic histories of Song, Liao, Jin, and Yuan, as well as private histories, gazetteers, and miscellaneous sources. The work was first published in 1825 (Daoguang 5) by the Xiǎo Xiàn Shān Fáng 小岘山房 press, making it one of the earliest dedicated monographs on the Xi Xia in Chinese historiography. Wú’s work was subsequently used by later Xi Xia historians including Dài Xīzhāng 戴錫章 and Chén Kūn 陳昆, and remains a reference point in modern Xi Xia studies despite the transformation of the field through twentieth-century Tangut-script document discoveries.