Arabic and Arwi Calligraphical Scripts employed by the Muslims of Tamil Nadu State of India reflect their means of writing. These writings put many of scholarly works more productive and accessible to the public. The primary objective of this study is to share their magnificent literary history and the Islamic legacy of Arabic and Arwi Calligraphical Works and their specimen Writings in these two languages.The role of these two scripts are very influential in Islamic discourse and Islamic knowledge.This study discusses specimen Writings of Calligraphic nature in palm leaves, unpublished books, printed books, letters, manuscript collections, inscription stones, tombstones with or without chronograms , documents and etc., It is an analytical cum descriptive study of these Calligraphical Works in Arabic and Arwi. The primary objective of this study is to share the impact of Arabic and Arwi Calligraphical Script on Muslims of Tamil Nadu and their magnificent literary history and the Islamic life.The valuable and useful ideas of Muslim minds in Tamil Nadu state of India were conveyed in the Islamic script as Calligraphical Works,stones inscriptions and written masterpieces .