The present study attempts to highlight the growth and development of institutional repositories in Africa. The institutional repositories developed by African countries were identified by selecting the database of OpenDOAR (Directory of Open Access Repositories). The retrieved data were thoroughly analyzed for the necessary information. The study found a total of 219 open access repositories In Africa, out of which 161(73.51%) are Institutional repositories that contained theses and dissertations as one content type. The process of inclusion of institutional repositories at OpenDOAR in Africa started in the year 2005, while the maximum growth of repositories has been recorded during the year 2013 (21; 13%), 2015 (29; 18%), and 2019(46; 28%) respectively. The study also signifies that Kenya is the front runner contributing the highest institutional repositories, followed by South Africa and Nigeria. In terms of sub-region categorization (Eastern Africa, southern Africa, Northern Africa, Western Africa, and central Africa), it is observed that eastern Africa is the leading region having a maximum number of repositories while central Africa is lagging which do not have even a single repository registered with OpenDOAR. DSpace is the most preferred software used by the institutional repositories. The interface language assessment shows that English, the international language, was the most commonly preferred interface language by African institutional repositories. [ABSTRACT FROM AUTHOR]