People to wear face masks in public in three more provinces as part of measures to curb spread of the virus.
In separate statements, the Istanbul, Ankara and Bursa Governorships made the announcements.
With these new measures, wearing masks has become mandatory in 45 provinces.
Turkey has so far confirmed 182,727 COVID-19 cases. A total of 4,861 people have died and 154,640 have recovered.
The pandemic has claimed more than 445,700 lives in 188 countries and regions since originating in Wuhan, China last December. The virus hit countries.