The 26-year-old British star will play the band's drummer, Roger Taylor, in the upcoming movie, reported Ace Showbiz.
"Ben caught the eye of producers and he has worked with director Bryan Singer on 'X-Men'," a source said.
"After a couple of screen tests, bosses decided he was the perfect man for the job and signed him up. He's very excited."
Ben will star alongside Rami Malek in the upcoming biopic that will follow Queen's journey up to their appearance at the Live Aid concert in 1985.
The "Mr. Robot" star has already been tapped to play the iconic band's frontman Freddie Mercury.