Currently in Indonesia, there are numerous tahfizh institutions that cater to individuals seeking to commit the Quran to memory. Muslims are obligated to memorize the Quran. Memorization, as defined in the Indonesian dictionary, originates from the root term "hafal," denoting the act of internalizing material and being capable of reciting it without reliance on external sources such as books or notes. The objective of this study is to ascertain the impact of student activities on Quran memorization capacity, specifically at the Tsanawiyah Madrasah of Darul Kutub El-Gontori Islamic Boarding School in Pagar Alam City, and to identify the extent of this influence. This study employs a quantitative approach and utilizes purposive sampling. Common data collection methods encompass observation, interviews, documentation, and surveys. The findings indicate that student activities have a favorable and significant impact on the ability to memorize the Quran, as evidenced by the hypothesis test results with a significant value of 0.001 (<0.05). Furthermore, the coefficient of determination test reveals that student activities account for 37.7% of the impact on the ability to memorize the Quran at the Tsanawiyah Madrasah of Darul Kutub El-Gontori Islamic Boarding School in Pagar Alam, with the remaining influence attributed to other factors.