A man was clobbered by a stranger during a robbery on a Bronx sidewalk — as at least six passersby watched but did nothing to help, surveillance video released by police Tuesday shows.

The men were arguing on the Wheeler Avenue sidewalk near Westchester Avenue in Soundview around 7:40 a.m., when the footage cuts to the squabble turning physical.

The surveillance footage, released by authorities Tuesday morning, shows the individual boisterously yelling at his 49-year-old victim. The video later cuts to footage of the victim being thrown to the ground from out of the camera’s view.

The attacker begins yanking the knapsack from the 49-year-old victim’s back while repeatedly hitting the man’s head, snatching his wallet, and then fleeing — all as witnesses stroll by, the video shows.

He made off with the victim’s credit card.

The victim was taken to St. Barnabas Hospital with minor facial injuries.

Cops are still looking for his attacker, who is described as approximately 40 years old, 5 feet 7 inches and 185 pounds.