Chorão, also known as Choddnnem or Chodan, is an island along the Mandovi River near Tiswadi, Goa, India. It is the largest among other 17 islands of Goa. It is located 5 kilometres away from the state capital, the city of Panaji and 10 kilometres away from the city of Mapusa.

The Mandovi or Mahadayi, formerly known as the Rio de Goa, is a river described as the lifeline of the Indian state of Goa. The Mandovi and the Zuari are the two principal rivers in the state of Goa. The Mandovi joins with the Zuari at a common creek at Cabo Aguada, forming the Mormugao harbour. Panaji, the state capital and Old Goa, the former capital of Goa, are both situated on the left bank of the Mandovi.