Two men were attacked in Ivory Blacks in Oswald Street, Glasgow, at about 23:00 on Friday 14 October.
Last month, officers released images of two men they want to speak to in connection with their investigation.
Both men are described as white and aged 25 to 35. The first is 5ft 8in tall with tattoo sleeves, and the other is 6ft 2in with shaved, reddish hair.
Police Scotland said the women may be able to assist them with their inquiries.
Anyone with any information about the incident or who recognises those shown in the images has been urged to contact the police.

The International Bomber Command Centre is being built in Lincolnshire, which became known as Bomber County in the war because it had so many RAF bases.
The centre is due to open in 2016 but a memorial spire has already been erected at the site in Lincoln.
Organisers want to invite every veteran to the unveiling on 2 October.
They already have names of 900 veterans but believe there are more still to be identified.
Nicky Barr from the International Bomber Command Centre says they have made some new contacts.
"A lot of the veterans that we've now been able to invite weren't on any comprehensive database or squadron lists," she said.
"We've picked up thus far about 50 that come under that category. We suspect that there's probably, at an estimate, another 100 out there."
The spire stands higher than the Angel of North and will be surrounded by a "wall of names" recording the 55,573 men who lost their lives serving in Bomber Command.
Other elements of the centre will include an exhibition and education space called the Chadwick Centre, an amphitheatre and acres of landscaped gardens.
Anyone knowing of any Bomber Command veteran is urged to register their names by emailing events@internationalbcc.co.uk or writing to The IBCC, 13 Cherry Holt Road, Bourne, Lincolnshire, PE10 9LA.

Edmund backed up two wins in qualifying with a 6-3 6-2 victory over world number 73 Garcia-Lopez in Beijing.
The 21-year-old from Yorkshire, ranked 54th, goes on to face another Spaniard, Roberto Bautista Agut, who beat John Millman 6-4 3-6 6-3.
Fellow Britons Andy Murray and Johanna Konta are in action on Tuesday.
Second seed Murray will play Italian Andreas Seppi in his opening match, while Konta takes on Hungary's Timea Babos as the British number one looks to maintain her hopes of a place at the season-ending WTA Finals.
American Madison keys, currently three places ahead of Konta in the eighth and final qualifying position, beat Kristina Mladenovic of France 7-5 6-4 on Monday.
There was an upset as China's unseeded Shuai Peng beat American sixth seed Venus Williams 7-5 6-1.
A CCTV image of two women who may have witnessed a serious assault at a music venue has been released by police.
[NEXT_CONCEPT]
Every living veteran who served in Bomber Command during World War Two is being sought for the unveiling of a new memorial.
[NEXT_CONCEPT]
Britain's Kyle Edmund is through to the second round of the China Open following a straight-sets win over Spain's Guillermo Garcia-Lopez.