Persian language and literature have a presence of about one thousand years in the Indian subcontinent. The growth of this language is indebted to Ghourid rulers whose mother tongue was Persian. However, we should not be negligent of the significant role of great Iranian Sufis and mystics such as Ali Ibn Othman Hojviri, Khawaja Moinuddin Chishti and Sayyed Ali Hamadani. The necessity of a research about the continuation and growth of Persian language in Pakistan is due to the questions as when this language and literature found its way and what is their importance in this country, as well as to what extent they have influenced Urdu and eventually their effects on Iranian studies. The research method is based on the review of historical documents with emphasis on numerous manuscripts kept in national and private libraries in Pakistan. The outcome of this research shows that the strength and solidity of Urdu is in critical need of more manuscript sources and stone-print documents for better understanding of spiritual culture, historical and public identity of Pakistan and seriously demands preservation of the ancient heritage of this region and production of new sources for the modern history and culture of Pakistan. Persian language and its heritage no doubt have a great share in this regard.
