| Jayadeva | |
| Hwan Nāyaka tuhan Pailah | |
| Full Name: | Hwan Nāyaka tuhan Pailah ह्वन् न्यक जयदेव |
| Spouse: | Dayang Bukah |
| Reign: | 900 CE |
Jayadewa or Jayadeva (Sanskrit: जयदेव ; full title: Hwan Nāyaka tuhan Pailah Jayadewa[1]) was the name of the Lord Minister of Pailah at the time that the Laguna Copperplate Inscription was written in . According to the document, he served as the representative of the "Commander in Chief" (Malay: pamegat [[Senapati|senāpat]]i di Tundun) in pardoning the descendants of an individual named Namwaran of his debts. Although no other records describe his life and works, Jayadewa is an important figure in Philippine historiography because he is one of the persons clearly identified in the LCI, which is the earliest known written document found in the Philippines.
He married Dayang Bukah, as in exchange to clear the debit of 1 kati and 8 suwarnas of Bukah's parents which is Namwaran and Dayang Angkatan.[1]
"On this occasion, Lady Angkatan, and her brother, Buka, the children of the Honourable Namwaran, were awarded a complete pardon from the Overall Leader [King] of Tundún, represented by the Lord Minister of Pailáh, Jayadewa."[2]