Yapa-Hadda, also Yapah-Hadda, was the mayor/ruler of Biruta-(Beirut) of the 1350-1335 BC Amarna letters correspondence.
Yapa-Hadda is referenced in 13 letters of the Amarna letters 382–letter corpus, and specifically in relation to neighboring Gubla-(Byblos), ruled by Rib-Hadda, (who was the most prolific writer of the Amarna letters, (68)).
Yapa-Hadda is sometimes the subject of letters, typically involved with his ships, and a collusion of cities, all against Gubla and Rib-Haddi.
42 of 68, authored by Rib-Hadda of Gubla: (Tablet 113–I is nonexistent.)
Letter of Yapa-Hadda sent to the Egyptian pharaoh by way of Sumu Haddi: Letter sent to Egypt, and commissioner, Yanhamu: