Valla \v(al)-la\ as a girl's name is a variant of Vala (Old German), and the meaning of Valla is "singled out".
The baby name Valla sounds like Vally, Valli, Valja and Vallia. Other similar baby names are Calla, Kalla, Dalla, Galla, Lalla, Valda, Vallda, Valka and Valma.