Ron, more than just Harry Potter's BFF, is also a extremely unpopular female name. Seriously, have you ever met a woman named Ron? We didn't think so. It's sometimes used as a nickname for more mainstream girls names like Rhonda, Veronica and Rowena–but even that's not likely noawadays. Nonetheless, if you are looking for a unique girls name that'll make people look twice, Ron may be a winner.