Is there any other names that have Thea in it or have a simmalur sound as Thea like Cynthia. So that Thea can be the nn. I can't edit the choices so yes is yes it is a proper name and no is no it is not a proper name. Sorry for the confusion.
Is Athena a proper name or a pet name? 90 votes
Other (added suggestion below)
Re: Is Athena a proper name or a pet name?
Thea is the short form of Dorothea and Theodora. You could also just use Thea.
And Athena is absolutely a proper name.
But still, it's a perfectly valid person name.
That being said, Althea makes the most sense if you want "Thea" as the nn. Greek goddess names for children are nms, but you could do it if you want.