The actor told ShortList that the younger son of Prince Charles was more attractive than his older brother William.
"I'm a massive royalist," Tovey said. "Growing up, I was fascinated with past kings.
"I'd actually quite like to play Prince Harry - he's the sexier brother, a bit more rock'n'roll."
He added: "Apparently he's now dating one of The Saturdays, which is amazing."
In Sky Arts' Playhouse Presents, Tovey plays a footman who was walking corgis instead of guarding The Queen's bedroom.