Jiǎ Céng 賈曾 (d. 727) was a Tang-period official and jìnshì who served in high posts at court under Xuánzōng 玄宗. He is known to Buddhist studies as the author of the preface to 圓暉 Yuánhuī’s Jùshě lùn sòng shū 俱舍論頌疏 (KR6l0036, T1823) — a rare non-monastic witness to the Tang Kōsha commentary tradition that explicitly documents the transmission line from 玄奘 Xuánzàng through 普光 Pǔguāng to Yuánhuī.