Purpose: The aim of this study was to analyze and visualize co-authorship network of research institutions in the field of Iranian digital libraries (DLs). Methodology: This scientometric research was done using social network analysis at the micro and macro-level metrics. Study population consisted of 554 research items such as books, national and international journal papers, conference papers, and MA and PhD theses in Iran up to 2013. Collected data were analyzed using the Excel, SPSS, NodeXL, UCINet and VOSviewer softwares. Also tools such as “Open heat map” and “Google trends” were utilized for map design and indentifying DLs study trends. Results: Findings showed that the highest positive growth was related to the scientific productions and researches with intra-institutional collaboration and in return the lowest was related to international collaboration. The research institutions of Tehran province had the major share in scientific productions and co-authorships. Results revealed that institutions like Islamic Azad University (IAU), Science and Research Branch of Tehran; Tehran University; IAU, Hamadan Branch; Alzahra University; and IAU, North-Tehran Branch played the most effective and key roles in the DLs collaboration network in Iran based on productivity, centrality, and collaboration measures. Also, macro-level SNA metrics for this study showed lower cohesion of the co-authorship networks, although it seemed to exhibit “scale-free” and “small world” network properties. Conclusion: Generally, it can be concluded that the researchers' willingness to form clusters and research communities is in increasing mood. Thus poor communication among groups is one of the obstacles in scientific development, more learning and innovation in the DLs domain in Iran.