A knife wielding goon stabbed a 15-year-old boy multiple times as he stood on a Washington Heights sidewalk Tuesday afternoon, cops said.

The attacker repeatedly plunged a knife into the back of his victim at West 184th Street near Audubon Avenue at about 3:45 p.m., cops said.

Surveillance footage shows the brutal assault.

The 15-year-old victim was rushed to Columbia Presbyterian Hospital where he is expected to survive.

The suspect, described as a male between 16 and 19-years-old, is still at large, police said.