In the Unknown origin, Siren means "Siren \s(i)-ren\ as a girl's name.
The baby name Siren sounds like Sirena and Sirene. Other similar baby names are Eiren, Aren, Bren, Caren, Karen, Coren, Siri, Deren, Eireen, Eiryn, Eirin, Airin, Faren, Iren, Eirene, Eirena, Aireen, Taren, Keren, Koren, Loren, Laren, Maren, Miran, Niran, Sarena, Sareen, Sarene, Serena, Serene, Sharen, Sine, Sideny, Siena, Syrena, Sirenna, Sirenia, Sireena, Siria, Sorel, Tirien and Wren."