This review sets out to summarize studies that consist of research-based evidence indicating the effect of social media on language teaching and learning .We probed Information and Communication Technology (ICT), social media, different social networks, and language teaching and learning in academic databases such as ERIC, Springer, Taylor and Francis, Sciencedirect, ProQuest, Elsevier, Scopus, Wiley, and Google Scholar. From 350 studies related to the effects of ICT and social networks on language teaching and learning in the literature, 9o Iranian and international core papers were reviewed. This meticulous review showed that SNSs positively influence the process of the teaching and learning foreign language.