A teenage girl spat on a police officer and punched him or her in the face, before kicking another after a fight in the crowd at Friday's Canberra Raiders rugby league game, police say.

They said on Sunday morning that they had arrested a 19-year-old Spence woman and charged her with four counts of common assault.

"During the second half of the game, a fight broke out in the crowd when an off-duty police officer intervened to de-escalate the situation. Uniformed police officers then attended the fight when the 19-year-old from Spence, spat at and punched one officer in the face and kicked another," police said in a statement. 

The woman is expected to face court on July 4.