Around 1.45am on Thursday, December 19 the 22 year old man was seriously assaulted in a laneway close to the Belmont Hotel.
He was taken to hospital for treatment to his injuries which are not believed to be life threatening.
The assault comes weeks after three police officers were injured and four people charged with offences following disorder in the same area.
DUP Councillor Jim McElroy condemned the attack. He said: “I hope the culprits are caught as soon as possible and I hope people will help police with their investigation.”
He added: “More police are needed on duty during the festive season when people are out at these entertainment locations.
“I wish all the revellers a safe and happy Christmas and hope they go home in peace and I wish the young man attacked a speedy recovery.”
Banbridge Policing Community Safety Partnership (PCSP) member Councillor Glenn Barr also condemned the attack.
He said: “Disorderly behaviour is not welcome in Banbridge.
“People need to be able to go out and enjoy themselves safely without incidents like this happening.”
Mr Barr added: “This was a vicious assault and I condemn any form of violence.”
A Police spokesperson said: “Due to the time of year there were a lot of Christmas revellers in and around the vicinity of the assault and Detectives would ask anyone who may have witnessed this incident or who has any information to contact them at Lurgan on 0845 600 8000.
“Or, if someone would prefer to provide information without giving their details they can contact the independent charity Crimestoppers and speak to them anonymously on 0800 555 111.”