Cognomen Railu (Railu 
) , all around the world, is a very rare surname. The surname Railu is habitual in South Africa, where it is a very rare surname, Venezuela, and Nigeria, where it is an extremely rare surname. Not in comparison with a country's population, it is commonest in India, South Africa, and Nigeria. More frequently, Railu is the forename as well as the last name.
Ram, Oraon, Manjhi, Muduli, Achari, Bisoyi, Bhumij, Bhumia, Kumari, Paraja, Pujari, Jalloh, Jhodia, Hantal, Hamimu, Mundari, Caldera, Bhatara, Kumbhar, Krisani, Tiamiyu, Amanatya, Nayak, Pradhani, Ganda, Padal, Sahu, Sing, Sisa, Khil, Paik, Rana, Devi, Dora, Gaud, Jani, Iddy, Matam, Malik, Majhi, Munda, Murmu, Singh, Silva, Abasi, Patra, Pangi, Durua, and Mustapha-Tiamiyu