A senior Health Ministry official, Mohsen Farhadi told IRNA that the new restrictions target four types of businesses and are aimed at curbing the spread of the deadly virus.
Farhadi said wedding and conference halls are banned from holding ceremonies and gatherings, and gyms where sports such as wrestling, judo, taekwondo and the like,where high physical contact between athletes is practiced, must shut down.
He added that coffee shops and tea houses, as well as aqua parks, amusement parks and zoos will remain closed during this period.
Iran has been battling a resurgence of COVID-19, with official figures showing a rise in both new infections and deaths since a two-month low in May.
The Health Ministry on Friday raised the overall virus toll to more than 13,790 deaths, with 183 new fatalities, and over 269,400 confirmed cases.
Iran has refrained from imposing a full lockdown but closed schools and canceled public gatherings. It banned travel between provinces in March but lifted the order the following month.
The rising toll has prompted authorities to make masks mandatory in enclosed public spaces and allow worst-hit provinces to reimpose restrictions.
AFP contributed to this story.