Tahnya \ta(hn)-ya\ as a girl's name is a variant of Tanya (Russian). See for meaning of Tahnya.
The baby name Tahnya sounds like Dahnya, Tawnya, Tahnia and Tahna. Other similar baby names are Tarnya, Tasya, Tasiya, Tonya, Danya, Dahna, Fawnya, Fanya, Hannya, Vanya, Manya, Talya, Panya, Tahnee, Taya, Tallya, Tanaya, Tanea, Tanga, Tonnya, Tanja, Tania, Tana, Taina, Tahni, Tawny, Tawnia and Tawna.