Jay Burns, who supports Everton, shared pictures of his gruesome facial injury to Facebook after the FA cup tie.
The knife wound slashed across his cheek needed dozens of stitches and left him unable to “even look at myself in the mirror”.
The mass brawl occurred near Millwall’s home ground in south London, The Den, at 4.42pm on January 26.
Millwall had beaten Everton 3-2 in the fourth round of the FA Cup.
“This was some of the worst football violence we have witnessed for ome time, leaving one man with a life-changing injury to his face.”
Detective Sergeant Matt Simpson
The Metropolitan Police said it was working with Merseyside Police to identify the thugs responsible.
In a statement released today, the Metropolitan Police said: “Detectives investigating disorder following a Millwall v Everton match in January have released images of a further 17 people – believed to be Everton fans – who they would like to speak to in connection with the widespread disorder which occurred before, during and after the match on Saturday, January 26.”
Detective Sergeant Matt Simpson from the Met’s Public Order Investigation Team, said: “We are working closely with Merseyside Police to identify the individuals in these pictures, who we believe to be Everton fans and I would urge anyone who recognises an individual to get in touch.
“We had an excellent response from the public when we issued the first set of images two weeks ago and I would now like to appeal again for the public’s assistance in identifying these individuals, who we believe were involved in unacceptable disorder before, during and after the game
“This was some of the worst football violence we have witnessed for some time, leaving one man with a life-changing injury to his face.”
When he originally shared his injury on Facebook, Jay wrote: “Absolutely devastated about my face.
“Nice one to all the Everton lads and everyone who has messaged me and the Liverpool lads who have messaged me, much appreciated.
“I can’t even look at myself in the mirror. Daft c*** award goes to me again.”