Considering the increasing importance and presence of the Social Networks Sites (SNSs) in educational scenarios, this work is aimed at exploring the scientific literature on their educational use for the last years. Through a bibliometric analysis composed of 191 journal articles written in English and Spanish, found in 7 different databases (ERIC, Scopus, DOAJ, EBSCO, ISOC, REDIB, and PsycARTICLES), the following variables were analysed: database, academic journal, authorship (including number of authors, country, and institution), year of publication, Social Network Site involved, level of education, study population, and nature of the study. Results show the existence of a greater number of publications written in Spanish than in English as well as a higher interest in the topic from Spanish authors, academic journals, and institutions. Facebook and Twitter were ranked as the most popular SNSs in both English and Spanish articles. At the same time, the majority of the selected articles were focused on tertiary education and their students. Finally, Scopus was the one which hosted the largest amount of international literature (most of it framed by a qualitative research design). All in all, the scientific production analysed on the educational use of SNSs reveals a considerable, increasing, and developing interest in the present topic. Thus, several educational implications emerge with the introduction of digital scenarios, such as SNSs, in the educational environments.