Cris 'Cyborg' Justino Becomes a U.S. Citizen

Cris 'Cyborg' Justino is officially a United States citizen!!

The Brazilian born UFC fighter was one of thousands who took an oath of citizenship in Los Angeles Tuesday morning at the L.A. Convention Center.

Get this ... Justino says she put "Cyborg" as her middle name on her docs, just to make things official.

Cyborg applied back in December 2015 ... and had previously had a visa for competitive athletes and a green card.