Surname Sienh (Sienh 
) , all around the world, is quite a rare last name. The cognomen Sienh is characteristic of Southern Asia, particularly India, where it is a rare surname.
Ku, Sohan, Anita, Arjun, Bhanu, Kamal, Puran, Radha, Jyoti, Nitoo, Nidhi, Hakim, Vinod, Vinya, Vivek, Vijay, Vijya, Vibha, Fateh, Mahesh, Sarita, Saurbh, Sonoo, Sunil, Monoo, Mamta, Om, Man, Ram, Lal, Tej, Sher, Sima, Amar, Amit, Atar, Shubhm, Ajit, Prem, Puja, Rita, Devi, Gita, Tilk, Neha, Hari, Hira, Manoj, Bina, and Anurag