Liú Chāngzōng 劉昌宗 (fl. mid-fourth century), Eastern-Jìn phonological-glossator (yīn-yì 音義) scholar, dates not preserved. He has no standard biography in Jìn shū or other dynastic histories; he is known only through extensive citation by Lù Démíng 陸德明 in the Jīngdiǎn shìwén 經典釋文 across the Sānlǐ corpus.
His preserved works in this corpus comprise two phonological commentaries: KR1d0112 Zhōulǐ Liú-shì yīn (2 juàn, reconstructed) and KR1d0129 Lǐjì Liú-shì yīn (1 juàn, reconstructed). He worked in the same Eastern-Jìn yīn-yì tradition as 徐邈 Xú Miǎo (the parallel Zhōulǐ Xú-shì yīn KR1d0109 and Lǐjì Xú-shì yīn KR1d0128 author) and 李軌 Lǐ Guǐ (KR1d0110).
His readings are cross-cited by Sòng-period reference works (Dīng Dù 丁度’s Jíyùn 集韻) showing the long-term influence of his phonological commentary tradition. No CBDB id assigned in current dump.
His personal name might also be read as a zì (style-name) — the form 昌宗 is unusually long for a personal name and may reflect a complete given-name-plus-style.