Zhū Yù 朱育 (fl. mid-third century), a Three Kingdoms 三國吳 paleographer-lexicographer of the Wú 吳 court (a contemporary of 韋昭 Wéi Zhāo). Known principally through Guō Zhōngshù’s KR1j0026 Hànjiǎn 汗簡 (NSong) as the compiler of several titled paleographic works frequently cited together in Hànjiǎn: Jí zì 集字, Qí zì 奇字, Zì lüè 字略, Jí gǔ zì 集古字, and Yì zì 異字 (KR1j0117 — the principal CHANT-reconstructed compendium). These titles overlap in unclear ways and are sometimes treated as a single corpus, sometimes as separate compilations. The fragments preserved in Hànjiǎn show a paleographic-gloss format pairing an archaic graph with its current-script equivalent. No biography in any standard history. CBDB has no matching entry.