The most notable female characters he has been romantically linked to are:
* Lois Lane: This is Superman's most famous love interest. Their relationship is a staple of the Superman mythos, and they've been married in various continuities.
* Lana Lang: Lana is Superman's childhood sweetheart and a recurring love interest in some stories.
* Wonder Woman: While their relationship has been explored in some stories, it's not as prominent or enduring as his relationship with Lois.
So, there isn't one specific name for Superman's "three girlfriends." His romantic life is more complex and involves multiple characters throughout the years.