15He Can Lift Thor's Hammer (But Not Because He's Worthy)
“Whoever holds this hammer, if he be worthy, shall possess the power of Thor.” That’s what the inscription on Mjolnir reads. In actuality, there should be an asterisk that reads, “Unless they are wielding the Infinity Stones.”
Despite definitely being deemed “unworthy” to lift the enchanted weapon, Thanos could hold
it if he also possessed the Infinity Gauntlet. With the abilities of the Power Gem, which grants its user supreme strength, and Reality Gem, that reshapes what is real and what isn’t, the Mad Titan would have no problem.
The only thing is, though, that he would have no use for it. Mjolnir may be an extremely powerful tool, but it pales in comparison to the combined power lying within his Gauntlet.