King Hui of Yan (, died 272 BC), ancestral name Jī (姬), clan name Yān (燕), personal name unknown, was the fifth king of the state of Yan in Warring States period of Chinese history. He ruled the kingdom between 278 BC until his death in 272 BC.

King Hui was a son of King Zhao, he was appointed the heir apparent to the throne. He had been at odds with the general Yue Yi. After his succession, he replaced Yue Yi with Qi Jie (騎劫) as highest commander of the army. Yue Yi escaped to Zhao, where he was enfeoffed as Lord of Wangzhu. Yet Qi Jie was not a good leader, Yan was defeated by the troops of Qi under Tian Dan, lost all the territory of Qi again. King Hui sent a letter to Yue Yi, accusing him of betraying the country. Yue Yi replied: "I have heard that the worthy and sage-like among the lords would never lay waste to the achievements they had established and thus were written about in the annals of their country, and that prescient scholars would never ruin the reputation they had perfected and thus were extolled by later generations." King Hui was regretful; as a compensation, he ordered Yue Jian (樂間), whom was Yue Yi's son, to inherit the title Lord of Changguo.

In 272 BC, King Hui was murdered by his chancellor Lord Cheng'an (成安君). He was succeeded by King Wucheng.

燕惠王（？ - 前271年），姬姓，名不詳，中國戰國時期燕國君主，燕昭王之子，昭王三十三年（前279年），燕昭王死，惠王即位。

燕惠王做太子時，與樂毅有隙，即位後對樂毅用而不信，後以騎劫代之，樂毅逃亡到趙國。齊襄王五年（前279年）齊人田單在即墨（今山東平度市東南）以火牛陣擊敗燕軍，騎劫戰死，齊國悉複得其故城。之後燕惠王責備樂毅離開燕國，樂毅回致一封《報遺燕惠王書》，載於《史記》。

《燕世家》記載燕惠王七年（前272年）卒，但據《趙世家》記載，趙惠文王二十八年（前271年，燕惠王八年），燕相成安君公孫操殺死惠王，原因不明，《韓非子》說因君主沒有察覺而被殺害。

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