In Turkey, the onset of sleep studies has extended over by 1960s. At that time, some Turkish scientists joined to the different sleep researches, which were conducted in Europe. In fact, the acceptance of the more scientists by Ismet Karacan who was the director of a sleep unit in USA has been important stage for Turkish sleep medicine. In this sleep center, many researchers came from different subspecialties such as neurologist, pulmonologist, and psychiatrist got training on different aspect of sleep and were in a part of scientific sleep investigations. After that education period, most of them returned to Turkey and founded the sleep unit in their institutions. In addition, they supported the scientists who were interested in sleep medicine in different places of Turkey. After the formation of awareness about sleep medicine and the elevation of the number of sleep centers, Turkish Sleep Medicine Society (TSMS) was established in 1997. This society is responsible for all sleep certification program for both medical doctors and sleep technicians. A large number of universities include 2-year electro-neurophysiology programs for technicians. After this education, if technicians want to have a specialty about sleep, they should apply to TSMS to get a certificate for sleep specialty.