Kuai, King of Yan (, died 314 BC), ancestral name Jī (姬), clan name Yān (燕), personal name Kuài (噲), was the second king of the state of Yan in Warring States period of Chinese history. He ruled the state between 320 BC and 318 BC.

Kuai was the son of King Yi of Yan, he came to the throne after his father's death. In 318 BC, Lu Maoshou (鹿毛壽) persuaded him to resign the throne in favor of the powerful chancellor Zizhi (子之) to "prove his humility". Kuai did so, he even removed his crown prince from power. In 314 BC, Crown Prince Ping (太子平) revolted against Zizhi, but was failed and killed in action. Encouraged by Mencius and other ministers, King Xuan of Qi sent Kuang Zhang (匡章) attack Yan in 314 BC. Yan was practically conquered by Qi, both Kuai and Zizhi were killed.

燕王噲（？ - 前314年），中國戰國時期的燕國君主，燕易王之子。

燕王噲五年（前316年），噲聽信蘇代之言，讓宰相子之專權，聽信鹿毛壽之言禪讓君位於宰相子之，以為宰相不敢受之。以此襌讓之名能令噲與堯齊名。

其後更把噲之子，燕國太子的用人權也奪去歸於子之，希望燕國能因此進行改革，國內大亂。

燕王噲七年（前314年），太子平與將軍市被反叛，數月，死者數萬。齊宣王發兵，攻破燕國，噲被殺，子之逃亡，後被齊人抓住砍成肉醬（醢其身）。

趙武靈王趁燕國內亂，將燕王噲庶子「公子職」從韓送回燕國，其後被擁立為王，是為燕昭王（另陳直《史記新証》認為公子職就是太子平的別名）。

近代有學者據《戰國策·燕策一》「權之難……噲子謂文公曰……」及「燕王噲既立，……噲老不聽政，顧為臣」的記載，認為燕王噲在燕文公時期已在管理國政，而在把王位讓給子之時稱已年老，應該不是燕文公之孫，而是燕文公之子。「昭王為王噲之子，昭王復國，於噲不可無諡，而讓國曰易，亦頗得當，故王噲即易王」。

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