In today’s global world, the importance of English can not be denied and ignored since English is the most common language spoken everwhere. With the help of developing technology, English has been playing a major role in many sectors including medicine, engineering, and education, which, in my opinion, is the most important arena where English is needed. Particularly, as a developing country, Turkey needs to make use of this world-wide spoken language in order to prove its international power. This can merely be based on the efficiency of tertiary education. Consequently, English should be the medium of instruction at universities in Turkey for the following three reasons: finding a high-quality job, communicating with the international world, and accessing scientific sources in the student’s major field.