A 16-year-old boy stabbed a 14-year-old boy in the chest with an unknown object in Queens on Wednesday afternoon, cops said.

The two boys were in front of 181-25 Hillside Avenue in Jamaica when the older one stabbed the younger one around 1:20 p.m., according to cops. 

The victim was taken to Long Island Jewish Hospital and was expected to recover, cops said. The older teen ran east on Hillside Avenue.

The circumstances surrounding the stabbing weren’t immediately known, a police spokesman said.