Onie \o-nie\ as a girl's name is a variant of Ann (Hebrew), and the meaning of Onie is "He (God) has favored me".
The baby name Onie sounds like Oni, Agnie, Ania, Annie, Anne, Janie, Ionie, Jonie and Jenie. Other similar baby names are Nonie, Tonie, Onita, Oria, Bonie, Tinie, Danie, Genie, Henie, Renie, Lanie, Lonie, Olia, Oline, Ollie and Onida.