Grand Prince Yangnyŏng
| Yi Che 이제 | |
|---|---|
| Crown Prince of Joseon | |
| Tenure | 6 August 1404 – 3 June 1418 |
| Predecessor | Crown Prince Yi Pangwŏn |
| Successor | Crown Prince Yi To |
| Born | 1394 Hanseong, Joseon |
| Died | October 8, 1462 (aged 67–68) |
| Burial | |
| Wife | Princess Consort Suseong of the Gwangsan Kim clan |
| Clan | Jeonju Yi clan |
| Dynasty | House of Yi |
| Father | Taejong of Joseon |
| Mother | Queen Wongyeong of the Yeoheung Min clan |
| Religion | Neo-confucianism |
| Korean name | |
| Hangul | 이제 |
| Hanja | 李禔 |
| RR | I Je |
| MR | I Che |
| Royal title | |
| Hangul | 양녕대군 |
| Hanja | 讓寧大君 |
| RR | Yangnyeong daegun |
| MR | Yangnyŏng taegun |
| Courtesy name | |
| Hangul | 후백 |
| Hanja | 厚伯 |
| RR | Hubaek |
| MR | Hubaek |
| Posthumous name | |
| Hangul | 강정 |
| Hanja | 剛靖 |
| RR | Gangjeong |
| MR | Kangjŏng |
Grand Prince Yangnyŏng (Korean: 양녕대군; Hanja: 讓寧大君; 1394 – 8 October 1462) was the former Crown Prince of the Korean Joseon Dynasty. He was the first son of King Taejong and his wife, Queen Wongyeong. Yangnyŏng was the elder brother of Sejong the Great, and an ancestor of Syngman Rhee, an independence activist and the first President of South Korea.