Sòng Jūn 宋均 (d. 76), Eastern Hàn classical scholar. The Suí zhì and Táng zhì record his commentary on the Yì wěi — a key Hàn-period Yì wěi commentary alongside 鄭玄 Zhèng Xuán’s, cited in the Sìkù notice on KR1a0164.