The attacks marked another round of US violations of the Iran-US memorandum of understanding and continued military aggression against the country.
According to the Hormozgan Governor General's Office, US strikes targeted civilian areas in western Bandar Abbas as well as Hajiabad County.
Officials confirmed that an attack on an environmental protection building in the village of Seyyed Jowzar killed three people.
Meanwhile, Bushehr Governor Mohammad Mozaffari said US forces struck two locations in Bushehr County in three separate waves during the early hours of Tuesday.
He said the attacks hit one area in the city of Bushehr and another near the city of Choghadak, describing them as part of Washington's continued hostile actions and repeated violations of the Islamabad memorandum of understanding.
According to preliminary field assessments, the early-morning strikes caused no casualties or injuries, and the security situation across Bushehr County remains fully under control, Mozaffari added.
The official later reported that four more explosions were heard in the city of Bushehr around midday as US attacks continued. No casualties had been confirmed from those strikes at the time of reporting.
Tasnim correspondents also reported that the central district of Dashti County was struck by a projectile around noon, before coming under a second attack a short time later.