A 29-year-old woman kicked two police officers in the groin and bit a third, a court has been told.
Shauna Emma Louise Deery, of Glenbrook Terrace, pleaded guilty to assaulting police on February 6.
Derry Magistrates Court heard that the officers were called to a city centre nightclub because of an assault.
Deery and another woman had been detained by door staff and when police tried to talk to the 29-year-old she became abusive.
The court heard she then assaulted three police officers.
Deputy District Judge John Connolly adjourned sentencing for a probation pre-sentence report to be compiled.
Deery will appear in court again on August 15.