Family name Siltu (Siltu 
) , around the world, is an extremely rare surname. The family name Siltu is characteristic of Southern Asia, particularly India, where it is an extremely rare surname. Much more frequently, Siltu is the forename as well as the last name.
Sk, Patra, Dolui, Dutta, Ghosh, Yadav, Mandal, Mahato, Mondal, Sardar, Sasmal, Sharma, Singha, Biswas, Konyar, Paswan, Ghorai, Thakur, Samanta, Karmakar, Pramanik, Rishidev, Kisku, Kumar, Koley, Konra, Sah, Sau, Kar, Pal, Ram, Ray, Roy, Dey, Das, Saha, Chakraborty, Shee, Bera, Khan, Jana, Nath, Maity, Majhi, Singh, Bagdi, Bauri, Kamat, Sinh, and Chakroborty