In this study, predictor variables (age, gender, region and language family) affecting the scores of Turkish language learners are examined through multiple regression method. The study group consisted of 280 international students registered to Turkish Language Teaching Centers located at Gazi and Hacettepe Universities. The research data were obtained from the Turkish course completion exam papers and personal information forms. According to the results, the average scores of the students from the Afro-Asiatic, Indo-European, Bantu, Sino-Tibetan and Austronesian language families were lower than those from the Altai language family. Additionally, the writing scores of the students from the Afro-Asiatic and Austronesian language families; the speaking scores of the students from Afro-Asiatic, Indo-European language families; reading comprehension scores of the students from Afro-Asiatic, Indo-European, Bantu and Sino-Tibetan language families and grammar scores of the students from Sino-Tibetan and Austronesian language families were lower than the scores of the Altai language family. In addition, while the age variable was found to have a positive effect on speaking scores, it was observed that area and gender variables were not significant predicators of scores. Findings are discussed in the light of literature and suggestions for further research are provided.