Accompanied by a group of Iranian lawmakers and clerics, Qalibaf arrived in Beirut on Sunday morning.
Lebanon is preparing for the burial of former Hezbollah leader Nasrallah, nearly five months after he was martyred in an Israeli air strike.
The country is expected to come to a halt for a few hours on Sunday for the funeral, which is scheduled for 1 pm (11:00 GMT) at the Camille Chamoun sports stadium on the outskirts of Beirut.
He will then be buried at a dedicated site nearby.
Nasrallah was martyred on September 27 in an Israeli air strike as he met commanders in a bunker in Beirut’s southern suburbs.
The funeral also honors Hashem Safieddine, who led Hezbollah for one week after Nasrallah’s death before he was also martyred in an Israeli attack.
He will be buried separately in the south on Monday.