Kosabi is a village in the Chiplun Taluka of Ratnagiri District in Maharashtra, India. Kosabi Pin Code is 415606. Branch Post Office (Delivery Office) is Kosbi which comes under Sawarde Sub Post Office of Chiplun H.O. in Ratnagiri.
Kosabi is bordered by Dervan, Hadkani, Nandgaon, Yegaon, Phurus, and Mundhe Tarf Savarda villages of Chiplun taluka. Vardan Waghjai Kalkai are the village dieties of Kosabi.
Kosabi is at a distance of 28 kms from Chiplun and 83 kms from Ratnagiri. Pune to Kosabi distance is 260 kms via Satara – Patan – Koyanangar – Chiplun – Sawarde while Mumbai to Kosabi distance is 269 kms.