In the Native American origin, Siu means "Siu \siu\ as a girl's name.
The baby name Siu sounds like Sue, Sioux, Xia and Zia. Other similar baby names are Sib, Sile, Siri, Di, Liz, Gia, Kia, Lia, Lou, Lu, Mia, Nia, Nis, Pia, Ria, Rie, Sal, Sam, San, Sina, Sima, Sine, Sky, Skie, Suzu, Thu, Tia, Vi and Ziv."
