Throughout the world, Tnia (Tnia 
) is a very rare girly forename. The given name Tnia is characteristic of Portugal, where it is a rare feminine name, and Brazil, where it is an extremely rare predominantly feminine, but scarcely masculine name. Much less frequently, Tnia is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Tnia | Portugal, Spain, Malaysia, United States, Brazil |
App, Phifer, Dubose, Taylor, Harris, Hapner, Vieira, Martins, Pereira, Ribeiro, Griffin, Hawkins, Monteiro, Champion, Carvalho, Teixeira, Vila Cova, Ferreira, Oliveira, Rodrigues, Fernandes, Wilkerson, Beamon, Coelho, Santos, Morgan, Gil, Mara, Melo, Adro, Prez, Reis, Wood, Maria, Matta, Miles, Nascimento, Silva, Sofia, Costa, Burse, Pinto, Rocha, Gomes, Lopes, Janey, Jesus, Falbo, Sousa, and Scarborough