Bahya ben Joseph ibn Paquda (also: Pakuda, Bakuda, Hebrew: , بهية بن فاقودا), c. 1050–1120, was a Jewish philosopher and rabbi who lived at Zaragoza, Al-Andalus (now Spain). He was one of two people now known as Rabbeinu Behaye, the other being Bible commentator Bahya ben Asher.
He was the author of the first Jewish system of ethics, written in Arabic around 1080 under the title Al Hidayah ila Faraid al-Qulub, Guide to the Duties of the Heart, and translated into Hebrew by Judah ibn Tibbon in the years 1161-80 under the title Chovot HaLevavot, The Duties of the Heart.
Little is known of his life except that he bore the title of dayan, judge at the rabbinical court. Bahya was thoroughly familiar with the Jewish rabbinic literature, as well as the philosophical and scientific Arabic, Greek and Roman literature, quoting frequently from the works of non-Jewish moral philosophers in his work.
Bahya says in the introduction to Duties of the Heart that he wished to fill a great need in Jewish literature; he felt that neither the rabbis of the Talmud nor subsequent rabbis adequately brought all the ethical teachings of Judaism into a coherent system.
Bahya felt that many Jews paid attention only to the outward observance of Jewish law, "the duties to be performed by the parts of the body" ("Hovot HaEvarim"), without regard to the inner ideas and sentiments that should be embodied in the Jewish way of life, "the duties of the heart" ("Hovot HaLev"). He also felt that many people disregarded all duties incumbent upon them, whether outward observances or inner moral obligations.
In his view, most people acted in accord with selfish, worldly motives. Bahya therefore felt impelled to make an attempt to present the Jewish faith as being essentially a great spiritual truth founded on reason, revelation (especially as regarding the Torah), and Jewish tradition. He laid stress on the willingness and the joyful readiness of the God-loving heart to perform life's duties.