Kasangadu is a village located in Madukkur Panchayat Union, Pattukkottai taluk, Thanjavur District, Tamil Nadu State, India.It is one of the 32 villages forming the Musgundhanadu, a Velalar Commune. It is surrounded by Moothakuruchi to north, Vattakudi and Regunathapuram to east, Mannangadu to south, Vendakottai to south west, Nattuchalai to west. The total geographical area of the village is 242.34 hectares. Many people from this village have settled in foreign countries like Singapore, United Arab Emirates, Malaysia, United Kingdom, France, Australia, United States of America, Poland.