Cinnamomum verum J. Presl, also referred to as the “true cinnamon,” is a small evergreen tropical tree belonging to the Lauraceae. It is a common spice used by different cultures around the world for several centuries. It is obtained from the inner bark of trees from the genus Cinnomomum. This study assesses the diversity and antifungal activity of the associated endophytic fungi resides in C. verum. A total 11 morphologically different fungal species have been isolated from root, leaf, and stem of C. verum. Identification of the isolates has been carried out by combining the morphological and molecular methods.The young leaf exhibits the highest colonization rate (54.67%) followed by bark (43.26%). Endophytic fungi isolate CZGB02 (Lasidiploidia theobromae) showed maximum dominant fungi percent (30.18) followed by CZYL 03(Aureobasidium melanogenum). Among the dominant isolates Lasidiploidia theobromae exhibited more antifungal activity against most of the phytopathogens tested in dual culture study. Lasidiploidia theobromae exhibited maximum inhibition rate for Aspergillus Niger (63.64%) and Aspergillus flavus (68.42%), which are common storage fungi.