Labaya (also transliterated as Labayu or Lib'ayu) was a 14th-century BCE ruler or warlord in the central hill country of southern Canaan. He lived contemporaneously with Pharaoh Akhenaten. Labaya is mentioned in several of the Amarna Letters (abbreviated "EA", for 'el Amarna'), which is practically all scholars know about him. He is the author of letters EA 252–54.
Labaya was active over the whole length of Samaria and slightly beyond, as he gave land to Habiru in the vicinity of Šakmu (Shechem) and he and his sons threatened such powerful towns as Jerusalem and Gazru (Gezer) to the south, and Megiddo to the north.
The Amarna letters give an incomplete look at Labaya's career. In the first of Labaya's letters thus far discovered (EA 252), he defends himself to the Pharaoh against complaints of other city rulers about him, for example, the complaint that he has hired mercenaries from among the Habiru. Labaya further admitted to having invaded Gezer and insulting its king Milkilu. He denied any knowledge of his son's alleged collaboration with the Habiru:
To the king, my lord and my Sun: Thus Lab'ayu, your servant and the dirt on which you tread. I fall at the feet of the king, my lord and my Sun, 7 times and 7 times. I have obeyed the orders that the king wrote to me. Who am I that the king should lose his land on account of me? The fact is that I am a loyal servant of the king! I am not a rebel and I am not delinquent in duty. I have not held back my payments of tribute; I have not held back anything requested by my commissioner. He denounces me unjustly, but the king, my Lord, does not examine my (alleged) act of rebellion. Moreover, my act of rebellion is this: when I entered Gazru-(Gezer), I kept on saying, "Everything of mine the king takes, but where is what belongs to Milkilu? " I know the actions of Milkilu against me! Moreover, the king wrote for my son. I did not know that my son was consorting with the 'Apiru. I hereby hand him over to Addaya-(commissioner). Moreover, how, if the king wrote for my wife, how could I hold her back? How, if the king wrote to me, "Put a bronze dagger into your heart and die", how could I not execute the order of the king?