Police say a 16-year-old and his friends were near 34th and Haverford in Mantua when someone started shooting into the crowd at about 11:40 p.m.
The teen was hit in the chest and the back of the head. He's in extremely critical condition.
A 19-year-old and 17-year-old were also hit and are now recovering at home.
The shooter remains on the loose.