Sūn Féngyì 孫馮翼 (zì Fèngqīng 鳳卿, fl. late 18th – early 19th century) was the nephew (從子) and collaborator of the great evidential-research scholar Sūn Xīngyǎn 孫星衍. He is best known as the co-compiler of the 1799 Sūn-family reconstruction of the Shénnóng běncǎo jīng KR3ec001, for which Zhāng Jiǒng’s preface specifically credits him with the cross-collation of Shuōwén, Ěryǎ, Guǎngyǎ, Huáinánzǐ, and Bàopǔzǐ citations. He assisted Sūn Xīngyǎn on the Píngjīnguǎn cóngshū 平津館叢書 and is associated with the textual recovery of several lost Han works (e.g. 《桓子新論》).
No CBDB record under this name; lifedates not securely fixed, but active in the Jiāqìng 嘉慶 era.