Pedro

With 1 534 904 bearers, Pedro is the 10th most common masculine given name in Brazil (2014 Data). With 386 124 bearers, Pedro is the 5th most common masculine given name in Angola (2014 Data). With 293 257 bearers, Pedro is the 9th most common masculine given name in Venezuela (2014 Data). With 290 394 bearers, Pedro is the 7th most common masculine given name in Mozambique (2014 Data). With 257 572 bearers, Pedro is the 3rd most common masculine given name in Portugal (2014 Data). With 73 995 bearers, Pedro is the 5th most common masculine given name in Paraguay (2014 Data). With 29 779 bearers, Pedro is the 6th most common masculine given name in East Timor (2014 Data). With 21 047 bearers, Pedro is the 4th most common masculine given name in Equatorial Guinea (2014 Data). With 1 749 bearers, Pedro is the 8th most common masculine given name in Belize (2014 Data).

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Source: https://forebears.io/forenames/pedro

Can also be an English name because it’s used in the United States.

Also Galician: http://www.ige.eu/igebdt/esq.jsp?idioma=gl&ruta=onomast/nomes.jsp
https://gl.wikipedia.org/wiki/Lista_de_nomes_masculinos_en_galego

This name is for GIRLS!

That's not true at all. If this name were feminine, it would be spelled Pedra, not Pedro.