Aim: the aim of the study is to evaluate the knowledge and attitude of Riyadh Elm University (REU) dental students and interns towards treatment modalities of bruxism. Materials and methods: A cross-sectional electronic-based questionnaire was administered in Saudi Arabia from February-April 2020. Validation of the survey was made according to principal components analysis. The questionnaire had 19 questions and it was sent electronically to Participants after obtaining the ethical approval from the Ethical Committee in Riyadh Elm University on the 24th or February 2020. Participants included undergraduate dental students in clinical years and interns at Riyadh elm university, Saudi Arabia both genders. A response of 288 participants has been collected. Results: 223 responds were collected, 193 participants were female (86.5%), while 30 (13.5%) were male. The majority of the participants were level 12 students (50.7%), while 19.7% were interns. The most common method of management for awake bruxism stated by participants was relaxation methods, 79.4% followed by splint therapy 40.8%, and pharmacological therapy 35%. However, the most common method of management for sleep bruxism stated by participants was splint therapy 80.3%, followed by relaxation therapy 45.3% and sleep hygiene methods 40.8%. 36.8% of participants have been involved in the treatment of patients with bruxism. However, 78.9 % of practitioners agreed that the occlusal splint used to treat only signs and symptoms of bruxism. Among students who treated patients with bruxism, 53.1% followed up with their patients. Conclusion: There is sufficient knowledge and awareness of REU undergraduate dental students in clinical years and interns about the treatment modalities of bruxism.