A reveller at a town centre nightclub was left with a facial injury after being punched in the toilets.
Police are trying to trace the men pictured in the CCTV images so they can help with their enquiries.
The incident happened in the early hours of Sunday August 10 at Raw nightclub on Wellington Road.
The victim was a 31 year-old man.
Officers believe that the men may be able to help with their enquiries and are urging them to come forward. Anyone else with information about the incident is also urged to get in touch.
If you can help officers with the investigation contact North Yorkshire Police on 101 – select option 2 – and ask for PC Melanie Smith or Whitby police.
Alternatively, information can be emailed to firstname.lastname@example.org
If you prefer not to give your name, Crimestoppers can be contacted anonymously on 0800 555 111.