Xiàhóu Zhàn 夏侯湛 (243–291), zì Xiàoruò 孝若, was a Western Jìn 西晉 man-of-letters and minor official from Qiáo 譙 (modern northern Ānhuī), of the same Xiàhóu lineage that produced the Wèi general Xiàhóu Dūn 夏侯惇. His biography is preserved in the Jìn shū 晉書 j. 55. He was famously handsome and a friend of Pān Yuè 潘岳 — the two were said to be inseparable and were jointly nicknamed Liánbì 連璧 (“paired jades”). He served in middle-ranking offices, culminating as Cavalier Attendant-in-Ordinary (散騎常侍), but his literary reputation outshone his political career.
He is principally remembered today for his Dōngfāng Shuò huà zàn 東方朔畫贊 (preserved in Wén xuǎn j. 47, and famously copied as calligraphy by Yán Zhēnqīng 顏真卿) and for his ambitious imitative fù. His prose treatises — chiefly the Xīnlùn 新論 — survive only as Qing-era jíyì compilations. In the Kanripo corpus he is the attributed author of KR3a0125 Xiàhóuzǐ xīnlùn. CBDB has no entry; the dates 243–291 follow the Jìn shū notice.