Which prophet's name means "God is salvation"?

The prophet whose name means “God is salvation” is Isaiah.

Isaiah comes from the Hebrew name יְשַׁעְיָהוּ (Yəšaʿyāhu), usually translated “Yahweh is salvation” or “the LORD is salvation.” Thus “God is salvation” is a fair English rendering of the name’s meaning. It is a theophoric name, combining a word related to salvation with a form of the divine name Yahweh.

The historical Isaiah was an eighth-century BCE prophet associated with Jerusalem. The Book of Isaiah places him during the reigns of Uzziah, Jotham, Ahaz, and Hezekiah, a period marked by Assyrian expansion and political danger for Judah. His messages combine warnings of judgment with promises of restoration and peace.

Traditionally, Isaiah is regarded as the author of all 66 chapters of the biblical book. Many modern scholars instead see the book as a collection shaped over several periods, with later sections reflecting the Babylonian exile and its aftermath. The name is sometimes confused with Jeremiah or Ezekiel, but their names have different Hebrew meanings.