The aim of this research is to know whether there is correlation between students’ motivation and their achievement in reading comprehension. The method used in this research was correlational study. The population of this research was the second year students of Smp N 1 Padamara, the sample were 72 students, and the writer used random sampling technique to take the sample. The writer collected the data using questionnaire and test. The data was analysed using Pearson’s product moment correlation formula. The result of the calculation obtained that value of rcounted was 0.742. The degree of freedom (df) was 72. The degree of significance 5% was 0.232. The result of hypothesis of this research was accepted. It means there was positive correlation between students’ motivation and their achievement in reading comprehension.