烽上王（？ - 300年），高句丽第14任君王，名相夫、歃矢娄，292年-300年在位。

293年八月，慕容鲜卑首领慕容廆率军攻打高句丽，烽上王狼狈奔逃，手下五百骑死战抵挡了慕容廆的追兵。

由于担心其弟高咄固与他争权，烽上王将其弟逼死。其弟的儿子乙弗逃走，后来成为美川王。

296年，慕容廆再次攻打高句丽，西川王（西壤王）的陵墓被挖，并掳去烽上王的生母。但后来被高句丽击退。

烽上王在位期间，乾旱、地震、霜降等异常气候导致了百姓生活困顿不堪，烽上王在外有鲜卑慕容家族崛起的忧患之下，还加修宫殿等严重的奢侈行为。且不听贤臣进谏，为了维护君王的威严，还把百姓抓来充当劳役。

高句丽名臣仓助利等众大臣一起商议废除君主，推举了烽上王的侄子乙弗，辅佐他做了美川王。

烽上王知道民心的离背后自杀身亡。

King Bongsang of Goguryeo (died 300, r. 292–300) was the 14th ruler of Goguryeo, the northernmost of the Three Kingdoms of Korea. He was the eldest son of King Seocheon.

From his youth, he is said to have been arrogant and dissolute, full of mistrust and envy. As soon as he was crowned, Bongsang charged his popular uncle Go Dal-ga (Prince An-guk) with treason and had him slain, upsetting his people.

In the eighth lunar month of 293 the Xianbei chieftain Murong Hui invaded. Bongsang fled to the mountain of Sinseong. The sohyeong of the north, Go No-ja, led five hundred cavalry out to meet the king, and went on to defeat the Xianbei forces. King Bongsang promoted Go No-ja to daehyeong, a position of the 5th rank, giving him Gongnim as stipend land.

The following month, the king feared that his younger brother Go Dol-go was plotting against him, and forced him to commit suicide. Dol-go's son, the subsequent king Micheon fled and preserved his own life. In the eighth month of 296, Murong Hui invaded once more, but was repelled.

The following month, a heavy frost and hail fell and destroyed the crops, but the king carried on with reconstructing the palace with gaining massive complaints from his people. In spite of continuous resentment, King didn't listen to the counsels of his ministers, while some of Goguryeo people chose to flee away from forced labor.

In the end, his ministers carried out a coup in the eighth lunar month of 300. Bongsang and his two sons committed suicide. He was buried in Bongsan-won. The ministers found the escaped prince, and set him on the throne as King Micheon.