In the world, Sinki (Sinki 
) is quite a common primarily girly, but scarcely boy's first name. The forename Sinki is characteristic of South Africa, where it is a rare epicene name, India, where it is a rare predominantly feminine, but very seldom male name, and Nigeria, where it is a very rare epicene name. Very seldom, Sinki is the last name as well as the forename.
Ng, Verma, Yadav, Mandal, Mishra, Mlambo, Sharma, Swaraj, Cheung, Khatun, Kumari, Pathak, Paswan, Prasad, Lepele, Ndlovu, Sithole, Agarwal, Ramfolo, Ladisic, Jaiswal, Nkgweng, Varma, Anggriani, Ndala, Nabam, Ho, Bai, Kim, Ram, Roy, Das, Jha, Shaw, Chan, Paek, Rani, Devi, Jain, Sagar, Singh, Sinha, Sihan, Suman, Kumar, Rajak, Gupta, Ntuli, and Bhattacharya