Family name Sidhartha (Sidhartha 
) , all over the world, is a rare last name. The family name Sidhartha is habitual in India, where it is a very rare surname, Indonesia, and Nicaragua. In absolute terms, the name is most common in India, Indonesia, and Mexico. Predominantly, Sidhartha is the forename as well as the last name.
Sen, Nanda, Nayak, Verma, Mandal, Mondal, Mishra, Sankar, Sarkar, Sharma, Behera, Biswas, Biswal, Parida, Mohanty, Shankar, Patnaik, Pradhan, Banerjee, Mahapatra, Mohapatra, Mukherjee, Ghosh, Gupta, Dutta, Reddy, Kar, Ray, Roy, Dey, Das, Saha, Sahu, Paul, Rout, Dash, Panigrahi, Jain, Mitra, Samal, Sahoo, Singh, Sinha, Swain, Kumar, Patra, Panda, Padhi, Jena, and Chakraborty