|King of Judah|
|Reign||640 to 609 BCE|
|Predecessor||Amon of Judah|
|Successor||Jehoahaz of Judah|
|Born||c. 648 BCE
|Died||Tammuz (June/July) 609 BCE
|House||House of David|
Josiah or Yoshiyahu (// or //;Hebrew: יֹאשִׁיָּהוּ, Modern Yoshiyyáhu, Tiberian Yôšiyyāhû, literally meaning "healed by Yah" or "supported of Yah"; Latin: Iosias; c. 649–609 BCE) was a king of Judah (641–609 BCE), who according to the Hebrew Bible, instituted major religious changes. Josiah is credited by most historians with having established or compiled important Hebrew Scriptures during the "Deuteronomic reform" that occurred during his rule.
Josiah became king of Judah at the age of eight, after the assassination of his father, King Amon, and reigned for thirty-one years, from 641/640 to 610/609 BCE. He is described as a very righteous king, a king who "walked in all the way of David his father, and turned not aside to the right hand or to the left" (2 Kings 22:2).