The 21-year-old from Isfahan was executed on Thursday, with Mizan saying he attacked police during January’s nationwide protests.
The UN human rights chief said at least 21 people have been executed since the war began on 28 February, including nine linked to the protests.
Rights groups say the post-war crackdown has intensified through closed-door trials and more hangings, while several other detainees remain at risk of execution.
As Iran executes dissidents, could a rebellion from within become its greatest vulnerability?
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With the Hormuz Strait choked, is the world economy ready for a total halt of Iranian oil?