At least five people were injured from fires that erupted in a forest area near Corinth and a plastics factory, further north, near the town of Inofita.
At the forest fire near Zevgolatios of Corinth, three firefighters were injured, as the flames engulfed a house which was almost totally destroyed.
There are fears that other buildings in this remote area maybe in danger.
According to some reports, the injuries occurred when the fire engine overturned into a ravine.
The injured were transferred to the Corinth General Hospital.
Earlier, two men suffered burns from a fire that broke out at a plastics factory in Inofyta.
The two men had already exited the factory building when the fire brigade arrived.
The fire at the plastics factory located at the 39th kilometer of the Athens-Lamia national highway in Inofyta began on Thursday afternoon.
A force of 30 fire men and 10 fire engines was sent to put out the blaze and declared it fully under control by Thursday evening.