In theology, monotheism (from Greek μόνος "only" and θεός "God") is the belief that only one God exists.
this includes
1) Ayyavazhi
2) Bahá'í Faith
3) Bábism
4) Cao Dai
5) Christianity
6) Islam
7) Judaism
8 ) Mandaeism
9) Rastafari
10) Ravidasi
11) Sikhism
12) Tenrikyo
13) Vaishnavism
14) Yazidi
15) Zoroastria