It needs no emphasis to state that the corporate existence of Nigeria has over the years been threatened by disunity, instability and lack of peace among the diverse ethno-religious groups. The contemporary situation is even worse over than that which prevailed two decades ago. The period of the present democratic regime for example, is the period, which the generality of Nigerians have the impression that violent eruptions have been accepted as a way of life in Nigeria and could happen anytime, anywhere without anyone getting sanctioned. In the last two decades of this political era, Nigeria has witnessed various forms of organized carnage, which put the unity, stability, and peaceful co-existence of the Nigerian citizens under a serious threat. It is the researcher’s belief that for the people of Nigeria to continue living as one corporate body, religious education must be enforced to all and sundry. It is in the light of this therefore, that this paper examined Islamic Religious Studies as an instrument of peace, unity and stability in Nigeria.