Kim Jang-saeng
| Kim Jang-saeng | |
| Korean name | |
|---|---|
| Hangul | 김장생 | 
| Hanja | 金長生 | 
| RR | Gim Jangsaeng | 
| MR | Kim Changsaeng | 
| Art name | |
| Hangul | 사계 | 
| Hanja | 沙溪 | 
| RR | Sagye | 
| MR | Sagye | 
| Courtesy name | |
| Hangul | 희원, 희지 | 
| Hanja | 希元, 希之 | 
| RR | Huiwon, Huiji | 
| MR | Hŭiwŏn, Hŭiji | 
Kim Jang-saeng (Korean: 김장생; Hanja: 金長生; July 8, 1548 – August 3, 1631) was a Neo-Confucian scholar, politician, educator, and writer of Korea's Joseon period.
He was the successor to the Neo-Confucian academic tradition of Yulgok Yi I (이이) and Seong Hon (성혼).