Surname Udayashankar (Udayashankar 
) , throughout the world, is a rare last name. The cognomen Udayashankar is characteristic of Singapore, where it is a very rare surname, the United Kingdom, and India. In absolute terms, this name is the most popular in India, the United States, and the United Kingdom. Predominantly, Udayashankar is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Udayashankar | Canada, Singapore, United Kingdom, United States, India |
Za, Dubey, Gupta, Yadav, Mandal, Mahato, Mehata, Mishra, Sharma, Bhagat, Pathak, Pandey, Paswan, Prasad, Thakur, Tivari, Tiwari, Tiwary, Pandeya, Upadhyay, Chaudhary, Chaudhari, Rajak, Pasad, Pande, Patel, Sah, Ram, Ray, Rai, Roy, Das, Lal, Jha, Oza, Saha, Jayasaval, Sahu, Raut, Dube, Giri, Ojha, Malay, Mahto, Shahi, Singh, Sinha, Kumar, Sinh, and Shrivastav