Channels Indiana Jones

Travis Kelce might be a Chief, but he turned into a Raider (of the Lost Ark) for his Saturday Night Live hosting gig ... channeling his inner Indiana Jones for a hilarious promo!!!

The superstar NFL tight end is testing out his comedic chops for the sketch comedy show this weekend ... and he's already proving he'll do whatever it takes to make people laugh.

Kelce teamed up with Marcello Hernandez for the clip ... showing him attempting to swap out a gold SNL logo with a Lombardi trophy, à la Indy in his classic scene from the 1981 adventure flick.