In this study, challenges in the translation of Islamic Shi’a texts of practical laws were investigated. The English translations of the books of Islamic laws written according to three Iranian Twelver Shi’a mujtahids namely, Grand Ayatollah Wahid Khorasani, Grand Ayatollah Sistani, and Grand Ayatollah Makarem Shirazi were examined. Next, the culture-bound terms concerning practical laws of religion in the three English translations were looked at to see what kinds of procedures have been used by different translators and which procedure(s) is/are the most frequent one(s). The results of this study indicated that the challenges found in the translation of Islamic law texts could be classified into two groups: lexical challenges and structural challenges. Moreover, it was found out that the main challenges include Islamic words, culture-specific items, units of measurement, common words with uncommon meanings, fixed expressions, and modal verbs. In addition, it was found that the translators of these texts have used six procedures more than others and those are transliteration, literal translation, cultural equivalent, functional equivalent, descriptive equivalent and recognized translation. The analysis of examples in this research suggests that among all procedures, the translator, in most cases, has used transliteration and literal translation to cope with the lexical gap.