Multiple people were stabbed after a man pulled out a giant kitchen knife during a violent brawl after a concert.

Six people were rushed to hospital for stab wounds after a fight broke out at the La Mirage Reception and Convention Centre in Melbourne in the early hours of Saturday morning.

The floor was covered in blood as the knife-wielding man lunged at several people in the group - leaving one fighting for his life.

Three men had to undergo surgery and the 29-year-old man remains in a critical condition.

The group had been attending the concert of Lebanese pop star Fares Karam at the venue but had been kicked out earlier that night.

They then returned to the venue around 2am, confronting staff about having to pay for corkage, 7 News reported.

Horrifying footage shows one man hitting another on the head with a metal pole while others hurl a series of punches.

Rami Wassouf, who witnessed the scuffle unfold, told the Sunday Herald Sun he tried to break up the fight.

A man wielding a giant kitchen knife (pictured left) repeatedly lunged at others in the group during the brawl on Saturday morning

The floor was stained with blood after several people were injured and rushed to hospital with one remaining in a critical condition

'I tried to stop some of the people bashing each other,' Mr Wassouf said.

'One person had a knife and he started stabbing people.'

Victoria Police said the investigation is ongoing and nobody has been charged.

Four of the injured men stayed in hospital overnight after the brawl.