A VICIOUS attack by a woman on a Brisbane bus driver has been caught on camera and released as police hunt for the alleged offender.

Footage of the incident was today released by Queensland Police in a desperate attempt to identify the woman who can be seen arguing with the driver for about 45 seconds before throwing a punch at his face. She was reportedly riled up over a fare dispute.

The attack took place after two women boarded the 320 bus on the corner of Saint Pauls Terrace and Union Street in Spring Hill, around 10.50am on December 19 last year, according to police.

“One of the women got into an argument with the bus driver over a fare and punched him in the face,” a police statement read. “The pair then got off the bus and were last seen heading northeast towards Fortitude Valley.”

In the footage, the woman’s female companion can be seen getting on and off the bus throughout the exchange.

The blow comes after the pair alight but then one strikes the front door as the bus pulls away. The driver reopens the door and the women can be seen in the footage walking back on board.

They then go to leave the bus again but one of the women throws a punch to the driver’s head.

The alleged offender, who appears to be wearing a grey dress, continues to verbally abuse the driver as he gets up from his seat and attempts to restrain her.

Police have released the security footage in a bid to identify and track down the offender.

Anyone who recognises the women or who may know of their whereabouts is urged to contact police.

“Officers work closely with Brisbane City Council to ensure instances of violence against bus drivers are investigated thoroughly,” police said.

A week ago a young man who got onto a bus in Carindale repeatedly punched a driver in the head.

In October 2016 Manmeet Alisher, also known as Manmeet Sharma, was letting passengers on board at a Moorooka bus stop when a man set him alight.

megan.palin@news.com.au | @Megan_Palin