David ben Yom Tov ibn Bilia was a Portuguese Jewish philosopher who lived in the thirteenth and fourteenth centuries.
Ibn Bilia was the author of many works, the greater part of which, no longer in existence, are known only by quotations.
Among them were: Me'or 'Enayim, a commentary on the Pentateuch, quoted by Caspi, Levi ben Gershon, and chiefly by the author's countryman Samuel Zarza, who often criticized Ibn Bilia's interpretations as being too mystical; and Yesodot ha-Maskil, published, with a French translation by S. Klein, in the collection Dibre Ḥakamim, Metz, 1849.
In the Yesodot Ibn Bilia propounded thirteen articles of belief in addition to those of Maimonides.
That David wrote works including the Kelal Qatan ("Concise Summary"), a treatise on the medical applications of astrology.