Gù Dìngfāng 顧定芳 (fl. early to mid-16th c.) was a Jiājìng-era physician of the imperial 御藥院 and father of the Shanghai publisher 顧從德 Gù Cóngdé. He acquired a fine Sòng-cut copy of the Huángdì nèijīng Sùwèn on a trip north and entrusted it to his son, who in 1550 used it as the base for the 顧氏覆宋刻本 facsimile that has since become the standard scholarly witness to the Sòng校正 Sùwèn (KR3ea001).