Family name Couhan (Couhan 
) , throughout the world, is quite a rare surname. The family name Couhan is habitual in India, where it is a very rare surname, and Indonesia.
Sri, Ramesh, Ramlal, Ramjit, Ranjit, Rupali, Rupsan, Ruplal, Dipali, Lalsan, Laxman, Nepali, Manilal, Matilal, Mayuraj, Mahabir, Shankar, Basanti, Kailash, Parbati, Prakash, Rampati, Putuli, Pratap, Birbal, Suresh, Smt, Ram, Mina, Ajay, Ajit, Banu, Raju, Manuj, Mania, Mohan, Joymoti, Munna, Arati, Ashuk, Kanai, Kunti, Dilip, Dipak, Durga, Vinod, Umesh, Malati, Anita, and Hewanti