The study has been conducted in descriptive and cross-sectional type in order to determine the effect of social media addiction on communication skills and academic achievement levels of nursing students. The data collection process of the study has been completed with 402 students studying at Erciyes and Nuh Naci Yazgan University Faculty of Health Sciences Nursing Departments between March-May 2022. Data have been collected by using Descriptive Characteristics Form, Social Media Addiction Scale - (Adult Form) and Communication Skills Scale. Descriptive statistics and Pearson correlation test have been used in data analysis and p<0.05 value was considered statistically significant. It has been found that the social media addiction levels of students who had bad family relations and who used cigarettes and alcohol were higher. It has been determined that the communication skills of the students who; have bad family and friend relations, smoke, are new to university and are younger, have lower communication skills. It has been determined that the academic achievement levels of the younger students and male students who have newly started to university are lower. In addition, it has been found that there is a negative and highly significant relationship between students' social media addiction levels, academic achievement levels and communication skill levels. As the result, as social media addiction increases in nursing students, communication skills and academic achievement levels are negatively affected. Low communication skills affect academic achievement negatively.