Zhāng Zhīfǔ 張知甫 (active early Xuānhé 宣和 [c. 1119–1125] through mid-Shàoxīng 紹興 [c. 1138 and after]) is a near-anonymous late-Northern-Sòng / early-Southern-Sòng minor official and author of the bǐjì KR3l0065 Zhāngshì kěshū 張氏可書. His native place, zì and hào, examination record, and official offices are unrecoverable; the Sìkù compilers, reconstructing the work from Yǒnglè dàdiǎn fragments, could only state “Zhīfǔ — we do not know what manner of man” (知甫不知何許人), and modern reference works have not improved on this. CBDB has no entry under this name as of 2026. The single external attribution of the work to him comes from the Àirìzhāi cóngchāo 愛日齋叢抄, which cites a 司馬光 / 文彥博 anecdote from the Zhāng Zhīfǔ kěshū.
Internal evidence from the Zhāngshì kěshū establishes only the following: (i) he held some minor office in Biànjīng 汴京 in the early Xuānhé reign (c. 1119–1125), with first-hand knowledge of the Nánxūnmén 南薰門 district and of the Míngjié 明節 empress’s apartments; (ii) he survived the Jìngkāng 靖康 fall of the capital (1126) and the Southern Crossing; (iii) he was still composing the Zhāngshì kěshū in or after Shàoxīng 8 (1138) — the latest dated entry in the surviving fragments — and likely on into the 1140s and 1150s, in his old age. His perspective on Liú Yù’s puppet Qí regime indicates a Sòng-loyalist stance.