Rock in Rio USA was a music festival held in Las Vegas, Nevada in 2015. A spin-off of Rio de Janeiro's Rock in Rio festival, it was first held on May 8 and 9, 2015 at the Las Vegas Festival Grounds—a purpose-built venue on the Las Vegas Strip developed in cooperation with the festival's organizers. It shared a similar structure and format to its Brazilian counterpart, hosting at least 120 acts for its first and only edition.
