Mark Wahlberg: Gunning for Conor McGregor ... For Movie Role

Mr. McGregor ... you ready for your close-up?

Mark Wahlberg says the UFC fighter could be a GREAT actor -- if he gets the right role -- and tells TMZ Sports he's already considering Conor for a role in one of his many many MANY projects.

In fact, the "Daddy's Home" star was out promoting his new flick in NYC -- when he told us it's "very possible" the two could end up working together in the near future.

He may have already been beaten to the punch -- Vin Diesel has hinted that he locked up Conor for the new "xXx" movie ... though no confirmation so far.