The 34-year-old victim was racially abused by the three men and assaulted when she tried to confront them.
She was left with a broken nose and a fractured cheekbone in the horrific attack.
Police have released CCTV which shows the woman clutching her face moments after the assault as she walked home from a night out with her partner.
She is seen in a fur coat and boots staggering away from the attack.
Moments later a gang of men dressed in t-shirts and dark jeans appear on screen fighting with another man, believed to be the woman’s boyfriend.
Security officers are then seen running over to break up the fight, which took place on December 11, last year at Coventry Skydome.
A West Midlands Police spokeswoman said: “A 34-year-old woman was walking home from a night out with her partner when a group of three men shouted a racist comment at her.
“When she tried to confront them she was assaulted and sustained fractures to her nose and cheekbone.
“Anyone with information about the attack is asked to contact PC Chris Parry on [email protected]
“If you don’t want to speak directly to the police you can contact the independent charity Crimestoppers anonymously on 0800 555 111. Please quote crime number 20CV/244814U/16.”