A stranger struck a 67-year-old woman in the head with a rock in an apparently unprovoked attack in Chelsea last week, police said Tuesday.

The victim was walking at Seventh Avenue and West 14th Street around 9 a.m. on July 6 when a man approached her and hit her with the rock, authorities said. 

The disheveled creep didn’t say anything to the victim before striking her with the rock, cops said. The assault appeared to be random, police added.

The victim was taken to a local hospital for a head injury, cops said. 

The suspect — who remains at large — ran off after the attack, heading west on West 15th Street toward Eighth Avenue, police said.

The NYPD on Tuesday released surveillance footage of the suspect — described as having a medium build and standing about 6-foot-2 — in the hopes of identifying him.

He was last seen wearing a loose V-neck green shirt, dark baggy pants and sporting a bushy beard and long dark hair.