Calla \c(al)-la\ as a girl's name is of Greek origin, and the meaning of Calla is "beautiful". From greek "kallos". Also the name of a flower: the calla lily. Also possibly a variant of Caoilainn an Irish Gaelic name meaning "slim and fair", or from Kelila meaning "crown of laurel" or a short form of Michaela.
For more information, see also related names Calida, Calista and Kayla.
Baby names that sound like Calla are Cala, Cally, Calli, Kalla, Callia, Cayla, Caila, Caela and Galla. Other similar baby names are Callan, Carla, Carlla, Cilla, Dalla, Lalla and Valla.