POLICE have appealed for help to identify a woman who indecently assaulted a teenage girl at a Rockingham bus stop.

The 17-year-old victim was waiting at a stop on Council Avenue about 11.25am on December 22 when a woman began shouting abuse at her before pushing her backwards.

Police say the woman indecently assaulted the teenager and continued yelling at her.

The victim managed to break free and board a bus which had just arrived at the stop.

Camera Icon The victim managed to break away from her attacker and board a bus. Credit: Supplied.

The woman police want to speak to is thought to be aged in her mid-30s, dark skinned and a slim build. She is about 155cm tall with black hair.

She was wearing a black T-shirt with FILA written on the front, dark coloured shorts, fingerless gloves and reflective mirror sunglasses.

Rockingham detectives urged anyone who saw the confrontation or who may have dash-cam footage of it to contact Crime Stoppers.