Jehoash, Joash, Joas (in the Biblical cases) or Yehoash may refer to:
- Joash the Abiezrite, Hebrew religious leader (fl. 2nd millennium BCE)
- Joash (given name)
- Jehoash of Judah, Hebrew ruler (reign c. 836–797 BCE)
- Jehoash of Israel, Hebrew ruler (reign c. 798–782 BCE)
- Iyoas I (d. 1769), Emperor of Ethiopia
- Iyoas II (d. 1821), Emperor of Ethiopia
- Yehoash (poet), pen name of Solomon Bloomgarden (1872–1927), Lithuanian-born Yiddish poet