Yahwism may be
- The historical worship of Yahweh/Yahu/Yehowah/Jehovah in the Levant during the Iron Age.
- The faction in modern Christianity which insists on using the name "Yahweh" instead of the conventional , see Sacred Name Movement.
The Collaborative International Dictionary
Yahwism \Yah"wism\, n. Also Jahvism \Jah"vism\
The religion or worship of Yahweh (Jehovah), or the system of doctrines, etc., connected with it.
Use of Yahweh as a name of God.