This research aims at investigating clinical supervision practices and the factors that influence the application of clinical supervision in Omani schools as perceived by EFL supervisors, senior teachers and teachers. The study is a descriptive study and the population of this study is 7125 English teachers, 482 senior teachers and 158 supervisors. The sample of the study consisted of 401 English teachers, 90 senior teachers and 46 supervisors from all governorates in Oman. Two questionnaires were used: a questionnaire for teachers and a questionnaire for senior teachers and supervisors. The study revealed the following findings: 1. There is a moderate use of clinical supervision practices as perceived by teachers, senior teachers and supervisors. 2. There are significant differences between the observers and teachers in their perceptions of the extent clinical supervision is practiced in Omani schools in the pre-lesson discussion stage and in the analysis stage for the benefit of the observers. 3. The most outlined factors that influence the application of clinical supervision as perceived by observers are teachers' perceptions factors and school context factors. 4. The most outlined factors that influence the application of clinical supervision as perceived by teachers are school context factors and implementation factors 5. There are significant differences in the observers and teachers' perceptions in the implementation factors for the benefit of the teachers. 6. There are significant differences in the school context factors and the teachers perceptions factors for the benefit of the observers. 7. There aren't significant differences between the supervisors and senior teachers regarding their perceptions of the factors that influence the application of clinical supervision that are attributed to their gender and their job position.