Most Muslims find it hard to memorize the Qur’an due to certain factors. This research explored the effect of spiritual intelligence and religious faith on self-regulation. Having   quantitative design, three instruments were used in this analysis; self-regulation scale (S-SR) (α=0.621), religious faith scale (S-RF) (α=0.986), and spiritual intelligence scale (S-SI) (α=0.890).  Four hundred (400) students in the tahfiz Al-Qur’an program from some Islamic boarding schools in Surabaya were selected through purposive sampling. The results from multiple regression showed that spiritual intelligence and religious faith significantly predicted self-regulation. In other words, both spiritual intelligence and religious faith had a positive effect on self-regulation. Besides, spiritual intelligence also positively affected self-regulation. The more positive students assessed their spiritual intelligence, the higher their self-regulation. That self-regulation then made students get more engaged with their activity of memorizing the Quran.