Needs analysis is generally believed to be important in ESP/EAP context because it enables practitioners and materials writers to find out about their real learners' needs. Therefore, this study is set out to investigate EFL teachers' beliefs and views about need analysis use and practices, specifically in the ESP/EAP tertiary context of the Sultanate of Oman. A group of (55) EFL teachers in 4 colleges participated in the study by responding to a questionnaire designed for the study’s purpose. The questionnaire was analyzed and percentages and frequencies were taken. The study concluded that needs analysis has to be encouraged and leaners' needs are of utmost importance ESP/EAP materials writing. The findings of this study showed that the vast majority of EFL teachers are in favour of using needs analysis as a basis for ESP/EAP materials writing and they believe that it is a significant factor in successful ESP materials development.