| Tsunesada | |
|---|---|
| Crown Prince of Japan | |
 Illustration by Kikuchi Yōsai, from Zenken Kojitsu | |
| Born | 825 |
| Died | October 12, 884 (aged 58–59) |
| House | Kōshitsu |
| Father | Emperor Junna |
| Mother | Seishi |
Prince Tsunesada (恒貞親王, Tsunesada-shinnō, 825 – October 12, 884) was a Japanese prince of the early Heian period. He was the second son of Emperor Junna. He was also known as Prince Teishi (亭子親王), and by his Buddhist name of Gōjyaku (恒寂). He was Crown Prince (皇太子, Kōtaishi) from 833 to 842, during the reign of his cousin Emperor Ninmyō.