The Arabic influence in West Africa has been studied from the perspectives of linguistics, anthropology, culture and religion. This paper will discuss both the common and divergent aspects of this influence, not only on linguistic material but also on anthropological data. This does not mean that only anthropological data has influenced the languages dealt with, but the donor language is also studied under the perspectives of what is transferred to the recipient. So, for example, Kanuri has been influenced by Arabic loan words for centuries, whereas all the minor languages in the wider Mega-Chad area and even in West Africa received Arabic loan words rather late. This gives us a kind of chronology whereby the linguae francae – simply because of their great numbers of speakers - cannot be neglected. An example is Hausa, which from its strong influence on other languages might be heavily responsible for that transmission. Another fact that cannot be ignored is the Fulfulde. Through their historical migrations over the whole Savanna belt of West Africa, they have been considered as carriers of Islam and thus, through the spread of Islam, have infiltrated the various ethnic groups with many loan words. Therefore this paper provides a concise overview of the work done so far on West African languages.