It happened around 10:50 p.m. Monday on the 700 block of Lehigh Street.
Police say 29-year-old Erik Mondragon was found suffering from a gunshot wound.
The victim was taken to Lehigh Valley Hospital-Cedar Crest where he died, according to the Lehigh County coroner's office.
The other victims, only identified as a woman and a juvenile were hurt, but are expected to be okay.
No arrests have been made.