Nàlǎ Xìngdé 納喇性德 (1655–1685; original name Nàlǎ Chéngdé 納喇成德, also written Nàlán 納蘭, by general Manchu / Hàn transliteration variation), zì Róngruò 容若, hào Léngjiā shānrén 楞伽山人, was a young early-Kāngxī Manchu Plain-Yellow Banner aristocratic poet, scholar, and Imperial Bodyguard of the First Class (yī děng shìwèi 一等侍衛). He was the son of the powerful Grand Secretary Míngzhū 明珠.
He passed the jǔrén in Kāngxī rénzǐ 康熙壬子 = 1672 and the jìnshì in Kāngxī guǐchǒu 康熙癸丑 = 1673, at age sixteen — under the chief examiner Xú Qiánxué 徐乾學, with whom he was thereafter closely associated. He died young at thirty.
He is remembered chiefly as one of the great Qīng cí 詞 poets — perhaps the greatest of the Qīng. His prose-and-classical-scholarly output is much more vexed: he is the named compiler-editor of the great Tōngzhì táng jīngjiě 通志堂經解 collection (138 classical commentaries), but in the high-Qīng the Qiánlóng emperor personally issued an edict (1785) declaring that the Tōngzhì táng jīngjiě was substantively the work of Xú Qiánxué, with Nàlǎ Xìngdé serving merely as the figurehead-compiler for the project of “selling reputation and currying favor with the powerful” (Xú with Nàlǎ’s father Míngzhū). The Qiánlóng edict is preserved at the head of the Hé dìng shān bǔ Dà Yì jí yì cuì yán 合訂刪補大易集義粹言 (KR1a0139) — the only one of the Tōngzhì táng jīngjiě texts attributed to Nàlǎ Xìngdé as compiler in the Sìkù.
Both Tōngzhì táng jīngjiě and the Hé dìng shān bǔ are nonetheless admired by the Sìkù editors as substantively useful compilations.