It is believed that some mysterious numbers counter different objects, thoughts concepts, the elements those include and load different faiths starting from mythological period to the present day. Those kind of numbers differ from culture to culture, society to society, region to region in different meanings. Of being similar themes in different mythologies, myths of the people lived in very different time and places to carry similar meanings and similar cultural functions of the repeated images is called "archetype". Some special meanings in Western Thrace Turkish folk culture is installed and blessed in considered numbers such as "three", "four", "five", "seven", "nine", "forty" those are common. Some of them dating back to the mythological period, while some have been won mysterious meaning throughout history, different cultures and beliefs. These numbers are important in terms of showing acceptable behaviors, and spread of Turkish culture in the Western Thrace. In this paper, first of all, mythological meanings of numbers of “three", "four", "seven", "nine", "forty" will be described as seen in the folk culture of the Turks in Western Thrace. And secondly, by comparing and analysing these mythological and mysterious numbers, it is aimed to show deepnes of originity of Turkish culture in Western Thrace.