“Mr. Larijani has tested positive for the coronavirus,” the Public Relations Office of the Iranian Parliament said in a statement on Thursday evening.
The speaker is now under quarantine and his general health condition is good, it added.
Iran has been among the countries hardest hit by the new coronavirus, which first showed up in China in late December 2019 before spreading to other parts of the world.
The death toll from COVID-19 in Iran has risen to 3,160 after 124 patients died over the past 24 hours, Health Ministry Spokesman Kianoosh Jahanpoor said on state TV on Thursday.
A total of 16,711 patients have been discharged from the hospital after recovering from the disease, he added.