Sūn Yù 孫毓 (fl. late 3rd century) was a Western Jìn 西晉 classicist and ritualist who held the office of Grand Protector of Chángshā 長沙太守 under Jìn Wǔdì 武帝 (r. 265–290). He is best known for his ritual scholarship, particularly the Máo shī yì wèn 毛詩異問 (a collation of variant readings in the Máo recension of the Shī jīng) and a Lǐ jì zhù 禮記注, both listed in the Suí shū jīngjí zhì 隋書經籍志 and now lost. He is regularly cited in Tōng diǎn 通典 and in the Lǐjì sub-commentaries on questions of mourning grade and ancestral ritual.
In the Kanripo corpus he is the attributed author of KR3a0126 Qù fá lùn 去伐論. CBDB has no entry; precise birth and death years are not preserved.