Yidya, and also Idiya, was the Canaanite mayor/ruler of ancient Ašqaluna in the 1350-1335 BC Amarna letters correspondence.
Yidya is mainly referenced in the Amarna letters corpus, in his own letters: EA 320–326, (EA for 'el Amarna').
However, the other reference to Yidya is a letter from the pharaoh to his vassal Yidya, letter EA 370.
The titles of Yidya's letters are as follows: See: Amarna letters–phrases and quotations, for the phrasing: "the king is Hale like the Sun"..., for long form (like this), and short form.
An article about the new commissioner, Reanapa.