Yǔ Chǎn 庾闡 (c. 286–339), zì Zhòngchū 仲初, was an Eastern Jìn 東晉 poet, fù writer, and literary essayist, a native of Yǐngchuān 潁川 Yānlíng 鄢陵 — the same Yǔ lineage that produced Yǔ Liàng 庾亮 (the powerful court minister) and Yǔ Bīng 庾冰. His biography is preserved in Jìn shū 晉書 j. 92 (Wényuàn lièzhuàn). He served in middle-ranking posts under Yuándì 元帝, Míngdì 明帝 and Chéngdì 成帝 — including zhùzuò láng 著作郎 (Director of the Imperial Archives) — and was a member of the Lántíng 蘭亭 generation of literary scholars.
He is principally remembered for his Yángdū fù 揚都賦 — the great early Eastern-Jìn celebration of the southern capital Jiànkāng, modeled on the metropolitan fù of Bān Gù 班固 and Zuǒ Sī 左思 — and for a substantial corpus of pentasyllabic verse, much of it preserved in Wén xuǎn and Yìwén lèijù. His shorter zǐ-house treatises survive only as Qing-era jíyì compilations. In the Kanripo corpus he is the attributed author of KR3a0133 Lì xué 厲學 and KR3a0156 Wén shì 文釋. CBDB has no entry; the dates 286–339 follow the Jìn shū notice.