A man was assaulted inside the Old Bell Inn in Warminster at 1.40am on Sunday (February 24).
The victim, who is local to the area, sustained a small cut to his head.
A 21-year-old local man was arrested on suspicion of assault and released on police bail pending further enquiries.
Anyone who saw the incident or has any information should contact Local Crime Investigator Julie Whittick at Salisbury Police Station on 101.
Alternatively, contact Crimestoppers 0800 555111.