The incident happened outside McDonald's fast food outlet at Daunt Square.
Two men and a woman were involved in the incident but it is unclear what started the fight.
The woman appears to be trying to intervene to stop it.
One man was swinging a hurley at the other during the incident.
The man then lost the hurley which was turned on him by the other male.
Blood was running down the back of the head of one man.
It is the latest disturbing incident in the city in recent days, following a mass brawl involving teenagers in Mount Oval on Saturday.
There was also a large-scale fight involving youths in Ballincollig in the last fotrnight while gangs of teens also caused trouble in Cobh at the weekend.