Riann \ri(a)-nn\ as a girl's name is a variant of Ryan (Irish, Gaelic), and the meaning of Riann is "king".

The baby name Riann sounds like Rianne, Rianna, Riane, Riana, Rhiann, Ryann, Riayn and Rian. Other similar baby names are Diann, Liann and Rianon.