The present study aims to investigate the impact of social media on the value system (especially citizenship, time respect, others' privacy respect, family communication, and communication values) among the students of the College of Education, Princess Nourah bint Abdulrahman University. It utilized the descriptive approach and applied a 40-item questionnaire covering (5) domains to a randomly selected sample of (142) students. Results revealed a positive impact of social media on citizenship and communication values, a moderately negative impact on time respect, and a poor impact on others' privacy respect and on family communication. There were no statistically significant differences in the impact of social media on the value system due to (specialization, family's economic status, time spent on social media, and preferred social media). The study results call for benefiting from the positive impacts of social media and sensitizing students to the negative ones, especially time respect and its optimal use, as well as conducting qualitative studies on the reasons for spending too much time on social media.