This study was conducted with both Bulgarian and Turkish eight-grade students, who studied in two different middle schools. It was aimed to understand Bulgarian, Romanian and Turkish students' metaphors on STEM disciplines. 18 Bulgarian, 23 Romanian and 20 Turkish students voluntarily participated in this study. Within this context, four separate statements were given to the students to be filled with their metaphors. The statement was like "Science looks like ..., because ... ." It is inferred from the results that Bulgarian, Romanian and Turkish students' metaphors are different from each other.