This dissertation uses all of the available evidence provided by coins to construct a numismatic history of the early Islamic precious metal coinage of North Africa and the Iberian Peninsula. The dissertation begins with a review of the analysis undertaken by earlier scholars, followed by an explanation of the adopted methodology, including the approach to the primary and secondary sources and the description of the methods used in the metrological, metallurgical, and die estimation analyses. The balance of the dissertation is divided into three sections. The first section is the typology, which divides the coinage into four series: Series 1, the Two Imperial Bust type; Series 2, the Latin Epigraphic type; Series 3, the Bilingual type; and Series 4, the Post-Reform type. The typology analyses each series in detail. This section also discusses the iconographical elements of the coinage, with a further chapter providing an analysis of certain anomalous examples that do not readily fit into the typology. The second section encompasses the analysis of the metrological and metallurgical aspects of the coinage and the estimation of the number of dies for each series. The final section combines the numismatic evidence and the historical record provided by a variety of secondary sources into a numismatic history of the two regions. This section includes a discussion of the historical context prior to, during, and after the Muslim conquest of North Africa and the Iberian Peninsula, as well as a discussion of find spots and circulation. The dissertation concludes with a comparison of the evolution of the precious metal coinage in North Africa and the Iberian Peninsula to the evolution of Islamic coinage in other regions of the Umayyad Caliphate and an exploration of the underlying nature of the coinage (i.e. regional, Imperial, etc.).