Aim: To measure the prevalence of using social media to gain and exchange oral health information among Qassim province population, evaluating the impact of social websites in changing oral health behaviors and identify the barriers that influence peoples’ use of social media as an essential source. Methods: A cross-sectional study was conducted among Qassim province population using an anonymous electronic questionnaire and distributed electronically through emails and social networking sites “e.g. Twitter, WhatsApp and Path”. 2029 subjects completed the questionnaire. Data from the completed questionnaires were analyzed using the SPSS Statistical Software Package (v. 21). All statistical analyses were carried out at a significance level of p<0.05. Results were analyzed and compared using chi-square test. Results: Most of respondents (64%) were using social media in oral health related reasons. The most used applications in oral health related reasons were Twitter (53.8%), Instagram (40.9%), and YouTube (36.7%). The majority (79.7%) stated that accessibility and easiness of getting information is the key reason for using social media as a main source while (50.3%) of the respondents selected the communication difficulty with experts as the main reason for not considering the social media a source.