Sienna \si(en)-na\ as a girl's name is a variant of Siena (Latin), and the meaning of Sienna is "from Siena".

The baby name Sienna sounds like Sianna, Cianna, Sinny, Sanna, Seana, Seanna, Sina, Sena, Siana, Signa, Sueanna and Zenna. Other similar baby names are Sirenna and Vienna.