Nike is both a brand name and a person's name. Is this name commonly used? Is it a male name or a female name?

To be honest, it is not commonly used. I stayed in Canada for about a year. Among all the people I met, there was no one named NIKE or ADIDAS. On the contrary, there were quite a few McDonald's.

Regarding whether it is a man’s name or a woman’s name, my personal opinion is very neutral.

But it is indeed the name of the Greek goddess of victory, there is no doubt about it.