Olianna \o-lianna, oli(an)-na\ as a girl's name is a variant of Oliana (Polynesian), and the meaning of Olianna is "oleander".
The baby name Olianna sounds like Ilianna and Elianna. Other similar baby names are Orianna, Lianna, Illianna, Iliana, Ileanna, Alanna, Elanna, Eliana, Elianne, Flanna, Galianna, Osanna, Eleanna, Julianna, Lilianna, Olinia, Olina, Oleana, Olinda and Oriana.