Over the past few years, the Persian and English translations of Quran have been studied from different standpointsThroughout the centuries, Muslim and non-Muslim translators have been very concerned to convey the meaning ofthe Quran into languages other than Arabic. The holy Quran is a divine book and its translation into other languagesmust be done meticulously. In this regard, Persian and English translation of one of the surahs of this magnificentbook was selected to be compared. the present study has gone through the investigation of the Persian translation ofone of the surahs of this holy book “Yasin” by Dr. Elahi Ghomshei (1361) and its English translation by threefamous translators Yusuf Ali (2000), Pickthall (1930) and Sarwar (2011) to see discrepancies. Also, this study triesto find out the unit of translation and classify different kinds of Vinay and Darbelnet’s procedures used by theEnglish translators.