It appears we could very well see that ... 'cause after Tyson Fury threw a verbal jab at "Game of Thrones" star Hafthor Bjornsson on Wednesday -- the actor-turned-boxer accepted a fight!!!

Fury's barb was pretty clever ... on his Instagram page, he wrote, "I wonder if Thor Bjornsson could take a crashing right hand to that big jaw," adding, "Who would have Thor's hammer? Would this mountain be too big to climb?"

It didn't take long for Thor -- a former World's Strongest Man -- to see the quips ... and in a shirtless video, he fired back at Fury -- accepting a fight if the 33-year-old heavyweight champ was offering one.

"I'm 100% up for war," Bjornsson said. "Let's do this."

Now, don't get it twisted ... even though Bjornsson is an actor and a former strongman, he's no stranger to the boxing ring.

Since 2021, Bjornsson has boxed in 4 professional fights -- winning two bouts while the others ended up in a draw.

And, the two are roughly the same size -- both standing at 6'9".