Characters with strong enough haki, but even that would be tough to do against his meito, especially Wado Ichimonji and Enma. Wado Ichimonji remained intact from an assault by Mihawk. And that was without haki imbued on it.
Anyway, I find this topic pointless as Zoro will likely never have his swords broken again, and his haki will only continue to grow stronger over time.
Pure head canon why would Mihawk even try to do that with the huge different in strength between him and Zoro at the time.
The man decided to fight Zoro with a pocket knife and that makes you think he was going all out trying to shatter it
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Mihawk is the only one who stands a chance his weakest blade the Sandai kitetsu survived without getting a nick after taking on Hakai. That is testament to Zoro incredible haki as it's two grades lower than his other two swords. People saying it's just about the quality of his swords need to read about meito and their different grades. The Yubashiri Zoro lost in Ennies lobby is higher grade blade than the Sandai which has stayed with Zoro for so long