Zhèng Kè 鄭克 (12th c., Sòng), zì Wǔzǐ 武子, was a Northern–Southern Sòng transition judicial official. Jìnshì of Shàoxīng 1 (1131). Held minor judicial posts. Author of the Zhé yù guī jiàn 折獄龜鑑 (KR3c0007), the major Sòng yí yù-genre work expanding from Hé Níng’s foundational Yí yù jí (KR3c0006). The catalog meta gives “12th cent.” as date. CBDB id 15349.