Abstract: The study of the Coastal Yorubaland as a regional group is of recent phenomenon. The traditional history of the various subgroups such as the Awori, Ilaje and Ijebu waterside is replete in theories and concepts of migration. The study of these theories and concepts in the settlement studies of the groups will enhance the knowledge of the Yoruba of the coastal environment. This presentation focuses on the analysis of the theories and concepts of migration of the Yoruba of the Coastal Nigeria which has not been given adequate attention. The study relies on diligent collection and interpretation of oral, ethnographic, archival and secondary source materials. The study observed that the pull and push factor in the settlement of the various coastal Yoruba found expression in economic, political, social, religious and geographical factors. The pattern of migration was from less favourable environment to more favourable one leading to fission and fusion of groups. The religious factor, especially that of the Ifa oracle played a dominant role in the settlement of many groups while the Ife connection remains a binding force.