The present study was conducted on 555 senior secondary students of Indian and Tibetan culture selected by random cluster method from Shimla and Dharamshala city of Himachal Pradesh. 304 students were selected from three Indian Senior Secondary Schools and 251 Students from Two Tibetan Senior Secondary Schools. The research tool used for the collection of data was Scott and Bruce’s Decision making styles inventory. Hindi versions of these tools by Prof. B.P. Verma were used in the study. The study find out the difference in decision making styles of Indian and Tibetan culture groups of senior secondary students and it was revealed that decision making styles may follow specific cultures. The present research also led to the inferences that gender and stream had significant difference with reference to decision making styles. Keywords: Culture, Gender, Stream and Decision making styles.