A stranger hurled a folding chair at an MTA bus driver in the Bronx, striking the worker in the head, police said.

The 56-year-old driver was talking to a colleague on White Plains Road near East 226th Street in Wakefield — just steps from the White Plains Road/East 225th Street stop — around 9 a.m. July 5 when a man approached them, cops said Monday.

A photo provided by police shows the stranger wearing a white shirt, blue jeans and red sneakers and carrying the white chair in his left hand.

Police said the man did not utter a word before lobbing the chair at the victim, hitting him in the head before fleeing.

The bus driver was taken to Jacobi Medical Center in stable condition. His attacker is still on the loose.

In a statement to the Post, an MTA spokesman wished the victim, who has worked with the department since April 2008, a speedy recovery and thanked the NYPD for its ongoing efforts.

Assaulting a transit worker is a felony for which anyone convicted faces up to 7 years.

“Our employees are given added protection under the law in recognition of the fact that they perform the critical task of moving millions of New Yorkers safely every day,” the spokesman said.