Jesse or Yishai (Hebrew יִשַׁי / יֵשַׁי, Standard Hebrew Yíšay / Yéšay, Tiberian Hebrew Yíšay / Yēšay) is the father of the Biblical King David mentioned in the Books of Samuel of the Hebrew Bible. David is sometimes called simply "Son of Jesse" (ben yishai). Jesse was the son of Obed, and the grandson of Ruth.
In the Talmud it says Yishai was one of four men (the others are Benjamin, Amram, and Chileab) never to have committed a sin.