My thesis is about Small and Medium Enterprises. I am analyzing Small and Medium Enterprises of Developed Countries and comparing it with the Small Medium Enterprices of Kazakhstan. The main goal of my thesis research is to analyze on why Small and Medium Enterprises’ definitions are various in some countries and different in others. Also, to give some crucial data about the importance of SMEs to the societies and to the economies of each country as well. Moreover, to have an answer for the main questions such as, “How is SMEs’ impact towards the improvement of Kazakhstan?” “Is there any chance for Kazakhstan to catch up with developed countries in terms of Small and Medium Enterprises?”