Jiāo Tínghú 焦廷琥 (zì Hǔyù 虎玉; 1783–1821; native of Gānquán 甘泉 in Yángzhōu) was the son of Jiāo Xún 焦循 (1763–1820), the great Yángzhōu kǎozhèng scholar and mathematician. He worked closely with his father on mathematical-astronomical and classical-philological subjects, predeceasing him by less than a year (and thus dying at the precocious age of 38 in 1821). His chief published work is the Dì yuán shuō 地圓說 (KR3fa033), a one-juǎn monograph arguing for the sphericity of the earth on classical-Chinese textual evidence as supplementary to the Western data — a contribution to the QiánJiā “xīxué zhōngyuán 西學中源” school of recovering Chinese anticipations of Western scientific positions. CBDB id 29829, 1783–1821.