Zhāng Zhěngzī 張拯滋 (late Qing to early Republican period, fl. 1900s–1930s), reformist physician active in the early-Republican project to standardise Chinese medicine through Western-style textbook publication. No CBDB record; biographical data from standard reference works is essentially absent. His one preserved work is the Tōngsú nèikē xué 通俗內科學 (KR3eh019), self-prefaced bǐngchén 春正月 = January 1916, and widely circulated through inclusion in the 1936 Zhēnběn yīshū jíchéng 珍本醫書集成 (Shanghai: Shìjiè shūjú).
Zhāng describes himself in the preface as géxīn guóyī zhī xiānqū 革新國醫之先驅 (“a pioneer of the renewal of national medicine”); the work adopts Western nosology and pathophysiology while prescribing Chinese herbal formulae, in the ZhōngXī huìtōng 中西匯通 tradition one generation after 唐宗海 Táng Zōnghǎi.