Police are looking for a shirtless creep who groped a woman as she was leaving a Queens subway station — and punched her in the face when she fought back, authorities said.

The 45-year-old victim was walking down the northbound 7 train platform stairway at the 103rd Street and Roosevelt Avenue station in North Corona on Sept. 16 when the man grabbed her behind around 10 p.m., police said.

The woman then hit her attacker in the chest, prompting him to punch her in the face before running off east on Roosevelt Avenue.

The victim refused medical attention.

Police described the man as a 5-foot-6 Hispanic, about 30 years old, with black hair and brown eyes.