Can Superman hold Thor's hammer?
So, there you have it: yes, Superman is capable of wielding Mjolnir, although he was only seen to have done so on an emergency basis — and, in fact, it appears that Wonder Woman is more unconditionally worthy of the weapon than he. Why can Superman lift Mjolnir? It's important to note that the rules around worthiness had been temporarily suspended to allow this to happen. As soon as the fight was over, Superman couldn't lift the hammer anymore.