Chéng Tíngzuò 程廷祚 (1691–1767), zì Miánzhuāng 緜莊, hào Qīngxī 青溪, was a Yōngzhèng-Qiánlóng-period Confucian scholar from Shàngyuán 上元 (Nánjīng, modern Jiāngsū 江蘇). He was nominated for special imperial summons but did not hold regular office.
His major Yì work is the Dà Yì zé yán 大易擇言 (KR1a0159) in thirty-six juàn, composed under the methodological guidance of Fāng Bāo’s 方苞 (1668–1749) suggested six-rubric editorial scheme. The work systematically extracts and grades the Yì commentaries on each canonical passage into six categories: (1) zhèng yì 正義 (proper meanings, fitting the canonical sense); (2) biàn zhèng 辨正 (corrected variants, settling sameness-and-difference); (3) tōng lùn 通論 (general discussion, where one passage’s argument penetrates others); (4) yú lùn 餘論 (residual discussion, isolated insights); (5) cún yí 存疑 (preserved doubts); (6) cún yì 存異 (preserved divergences). Where Chéng has his own opinion he marks it yú àn 愚案. Methodologically the work rejects the symbol-and-number tradition entirely (no chéng 乘 / róu 柔 / bǐ 比 / yìng 應 line-relationship apparatus; no yīn-line-yáng-position / yáng-line-yīn-position speculation; only the Shuōguà’s eight-trigram-virtues jiànshùndòngrùxiànlìzhǐshuō 健順動入陷麗止說 as the proper xiàng of the eight trigrams).
His other works include Yì tōng 易通 (a parallel Yì general treatise) and various Confucian-learning writings.