''Jehovah'' was popularized in the English-speaking world by William Tyndale and other pioneer English Protestant translations such as the Geneva Bible and the King James Version. It is still used in some translations, such as the New World Translation, the American Standard Version, and Young's Literal Translation, but it does not appear in most mainstream English translations, as the terms ''Lord'' or ''LORD'': used instead, generally indicating that the corresponding Hebrew is Yahweh or YHWH.

Is it true that is the word jehovah in the king james bible?
yes