Yes, Bo can be a girl's name. It is considered a gender-neutral name.
Bo has roots in various cultures and languages, including Norse and Scandinavian, where it means "to live" or "dwell." While historically, it might have been more frequently used as a nickname or a masculine name, it's increasingly embraced as a given name for both boys and girls. Its simple and modern sound makes it appealing to parents looking for a short, versatile name.
Therefore, if you're considering Bo as a name for a girl, it is a perfectly acceptable and increasingly common choice.