King Sindae of Goguryeo (89–179; r. 165–179) was the eighth ruler of Goguryeo, the northernmost of the Three Kingdoms of Korea. The Samguk Sagi records him as the half-brother of the sixth king Taejo and the seventh king Chadae. Other records indicate he may have been Taejo or Chaedae's son.

He remained quiet under the harsh reign of Chadae, secluding himself in the mountains. After Myeongnim Dap-bu assassinated Chadae, Sindae was invited to ascend the throne by court officials. At that time he was already 77 years old. The Samguk Yusa indicates that Sindae himself killed Taejo and Chadae to become king. He tried to stabilize the court by incorporating Chadae's son and other opponents into his administration. To strengthen royal power, he created the supreme ministerial post of guksang(國相), and appointed Myeongnim Dap-bu to the office.

In 169 and 172, Goguryeo was attacked by China, but successfully continued resistance to control the border. Goguryeo united with the Xianbei and attacked the Yuju and Byeongju districts of the Later Han Dynasty of China; however, their alliance brought no great victory. The Later Han invaded Goguryeo in the eleventh month of 172, but were destroyed by Myeongnim Dap-bu's army at Jwa-Won(坐原), gaining success to expand its territory into western side of the kingdom.

In 176, he named his second son Nammu as the crown prince (subsequent king Gogukcheon), which consolidated the tradition of patrilineal succession. Sindae died in the twelfth lunar month of 179, at the age of 91.

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新大王（89年 - 179年），高句麗第8任君王，名伯固、伯句，公元165年-179年在位。其兄次大王被明臨答夫殺後，被擁立為新的高句麗君主。在位期間，曾擊敗東漢玄菟郡的軍隊。死後，其子男武繼位，即故國川王。

在《三國志·魏書卷30》中，被稱為太祖王高宮的兒子，『宮死，子伯固立』。這裡的兒子可能是太組王后代的意思。

《三國史記》將宮、遂成、伯固三代王看成是兄弟，結果在一百多年內只有三兄弟為王，其真實性令人懷疑。如果太祖王真的是121年死，遂成、伯固最可能是宮的曾孫，當然也不排除是宮的孫子的可能性。

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