Hé Dàrèn 何大任 (fl. Jiādìng reign, 1208–1224, 南宋), Southern-Sòng official-physician with the title Héān dàfū tèchāi pàn Tàiyī jú 和安大夫特差判太醫局 (Héān dàfū-rank, specially-detailed Director of the Imperial Medical Bureau). Cut blocks for the previously-anonymous Xiǎo’ér wèishēng zǒngwēi lùn fāng 小兒衛生總微論方 (KR3e0031) and produced its first imperial-bureau printed edition in Jiādìng bǐngyín (1206); Hé’s preface — preserved at the head of the SKQS print — explains that the manuscript had been in his family for over sixty years, that the original author was unknown despite extensive enquiry, and that he had personally verified the work’s clinical efficacy on relatives’ children before deciding to print. Beyond this preface and his bureau-title attribution he has no further transmitted biographical record.