The purpose of this study was to determine the positive and significant influence of teacher creativity on the interest in learning PAK of class X students of SMK Swasta Persiapan Pematang Siantar in the academic year 2024/2025. The method used in this study is a quantitative method with inferential descriptive statistics. The population was 130 class X students of SMK Swasta Persiapan Pematang Siantar and a sample of 40 people was determined using a random sampling technique. Data were collected using a positive closed questionnaire of 35 items. The results of the data analysis show that there is a positive and significant influence between the Creativity of Christian Religious Education teachers on the Learning Interests of class X students of SMK Swasta Persiapan Pematang Siantar Academic Year 2024/2025, as evidenced by the following data analysis: 1) Analysis requirements test: a) positive influence test obtained rxy value = 0.551> rtable (? = 0.05, n = 40) = 0.312 thus it is known that there is a positive influence between variable X and variable Y. b) Significant relationship test obtained tcount value = 4.072> ttable (? = 0.05, dk = n-2 = 38) = 2.021 thus there is a significant relationship between variable X and variable Y. 2) Influence test: a) Regression equation test, obtained regression equation Y ?="25.127" + 0.912X. b) Regression determination coefficient test (r2) = 30.4%. 3) Hypothesis testing using the F test obtained Fcount > Ftable, namely 16.581 > 4.08. Thus Ha is accepted and H0 is rejected.