Throughout the world, Nannu (Nannu 
) is a common primarily masculine, but very infrequently feminine first name. The first name Nannu is characteristic of Western Asia, particularly Bahrain, where it is quite a rare masculine name, Saudi Arabia, where it is quite a rare predominantly masculine, but very infrequently female name, and Qatar, where it is quite a rare boy's name. Not in comparison with a country's population, it most frequently occurs in India, Bangladesh, and Saudi Arabia. Very seldom, Nannu is the last name as well as the forename.
Sk, Molla, Shaik, Singh, Sihan, Ahmed, Kumar, Islam, Yadav, Mandal, Sharma, Shaikh, Sheikh, Stuart, Paswan, Thakur, Natthu, Matubber, Shankar, Hossain, Mangilal, Gangaram, Mahto, Howlader, Devi, Bhai, Mal, Mia, Sah, Sig, Sih, Ali, Bai, Bee, Kha, Kho, Ram, Ray, Lal, Jha, Miah, Miha, Miya, Shah, Shek, Sing, Babu, Khan, and Shobharam