Information and communication technologies, including social webs and the Semantic Web have provided a new perspective on the development of the digital library. This article intends to introduce social semantic digital library as a prospect for digital libraries in Iran. The document/ review method is used to do the research. This study outlines the importance of the Semantic Web in digital library, semantic digital library and social semantic digital library then offers a perspective on social semantic digital libraries in Iran. Findings show that digital libraries are faced with challenges such as retrieval of information and users’ knowledge sharing. So, semantic digital libraries and social semantic digital library will be the next steps in the evolution of current digital libraries. Social semantic digital library will improve the efficiency of digital libraries in the areas of resource management, browsing and searching features, retrieval information, and the users’ knowledge sharing and communicating with other digital libraries.