I Want To Fight Conor McGregor

WrestleMania 39 is over ... but Dolph Ziggler is already eyeing a spot on next year's card, telling TMZ Sports he's down to fight UFC star Conor McGregor on "The Grandest Stage of Them All" at WrestleMania.

We spoke to Dolph -- whose last WrestleMania match was in 2020 against Otis -- out in Beverly Hills recently ... and the former WWE Intercontinental Champion is already imagining what a feud with McGregor looks like on the heels of the WWE and UFC merger.