A woman in her 20s suffered a cut to her cheek after a glass was thrown in her direction at the Duke of York pub on Weybourne Road, between Farnham and Aldershot.
Police say a woman in her 20s was injured by the thrown glass while she was near the bar inside the pub at around 9.30pm last Friday (July 1).
A man in his 20s was also left with bruising and swelling to his face after an altercation inside the pub.
Police have since arrested a 27-year-old woman from Aldershot on suspicion of causing grievous bodily harm with intent and assaulting a person occasioning them actual bodily harm.
A Hampshire Constabulary spokesman said: “Officers have launched an investigation and have been carrying out enquiries.
“We are now appealing for witnesses to come forward to help with the investigation.
“Were you in the pub at that time? Did you witness the incident?
“As part of our enquiries, a 27-year-old woman from Aldershot has been arrested on suspicion of grievous bodily harm with intent and assaulting a person occasioning them actual bodily harm.
“She has been released under investigation and our enquiries are ongoing.”
Anyone with information is asked to contact 101 quoting the reference number 44220262907.