A 26-year-old Whitby man was assaulted while walking along Church Street at 3am on Saturday morning.
Three men attracted his attention before punching the victim several times in the face, resulting in his nose bleeding heavily.
Police are appealing for anyone who witnessed the assault to get in touch by calling 101.
Although the man was not taken to hospital, police would also like to hear from anyone who has any other information about the incident.
Anyone who can assist the investigation is asked to call North Yorkshire Police on 101, select option 2 and ask for PC Melanie Smith.
Or you can email firstname.lastname@example.org
If you prefer to remain anonymous you can pass information to Crimestoppers on 0800 555 111.
Quote incident number 12140033093 when passing on information about this incident.