The purpose of this thesis is to analyse the reasons for the decline in the North African Church. It is generally considered that the spread of Islam brought about the destruction of the North African Church between the seventh and the eighth centuries. The Church began its history with encouraging growth and its message and witness spread through the Roman world. This culminated in Christianity being more readily accepted as ‘one of the many religions’ through the declaration of the Edict of Milan by Constantine in 313 AD.