| King Xiao of Yan 燕孝王 | |
| Succession: | King of Yan |
| Reign: | 257–255 BCE |
| Predecessor: | King Wucheng |
| Successor: | Ji Xi |
| Full Name: | Ancestral name Jī (姬) |
| House: | Ji |
| Dynasty: | Yan |
| Posthumous Name: | King Xiao (孝王) |
| Death Date: | 255 BC |
| Father: | King Wucheng of Yan |
| Issue: | Ji Xi |
King Xiao of Yan (; died 255 BC), personal name unknown, was king of the Yan state from 257 BC until his death in 255 BC.[1]
King Xiao was a son of King Wucheng, and ascended the throne after his father's death.[2] During his reign, Yan started to construct an extensive fortifications to protect against the barbarians. The wall stretched from Shanggu Commandery to Liaodong Commandery.[3]
King Xiao died in 255 BC, succeeded by his son Ji Xi.[1] [4]